<PAGE>
 
                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549

                                   FORM 10-Q


[X]    QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES 
       EXCHANGE ACT OF 1934

For the quarterly period ended October 1, 1995

                                      OR

[_]    TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES 
       EXCHANGE ACT OF 1934

For the transition period from _________________ to __________________

Commission file number 1-5560
                       ------

                            Alpha Industries, Inc.
            (Exact name of registrant as specified in its charter)

                Delaware                                  04-2302115
     (State or other jurisdiction of                   (I.R.S. Employer
     incorporation or organization)                   Identification No.)

  20 Sylvan Road, Woburn, Massachusetts                      01801
(Address of principal executive offices)                   (Zip Code)

Registrant's telephone number, including area code:      (617) 935-5150

     Indicate by check mark whether the Registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
Registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days.

        Yes   X       No   
            -----        -----

     Indicate the number of shares outstanding of each of the issuer's classes
of common stock, as of the latest practicable date.

             Class                               Outstanding at October 25, 1995
Common Stock, par value $.25 per share                     7,809,272

                                                                               1

<PAGE>
 
Alpha Industries, Inc. and Subsidiaries ----------------------------------------

                               Table of Contents

- --------------------------------------------------------------------------------

                                                                         Page


Part 1      Financial Information


   Item 1 - Financial Statements

        Consolidated Balance Sheets - October 1, 1995 
        and April 2, 1995............................................      3

        Consolidated Statements of Income - Quarters and Six Months
        Ended October 1, 1995 and October 2, 1994....................      4

        Consolidated Statements of Cash Flows - Six Months Ended 
        October 1, 1995 and October 2, 1994..........................      5

        Notes to Consolidated Financial Statements...................      6


   Item 2 - Management's Discussion and Analysis of Financial 
        Condition and Results of Operations..........................      7


Part 2      Other Information


   Item 1 - Legal Proceedings........................................      8


   Item 4 - Submission of Matters to a Vote of Security Holders......      8


   Item 6 - Exhibits and Reports on Form 8-K.........................      8

- --------------------------------------------------------------------------------


Statement of Fair Presentation

The financial information included herein is unaudited. In addition, the
financial information does not include all disclosures required under generally
accepted accounting principles because certain note information included in the
Company's annual report to shareholders has been omitted and such information
should be read in conjunction with the prior year's annual report. However, the
financial information reflects all adjustments (consisting solely of normal
recurring adjustments) which are, in the opinion of management, necessary to a
fair statement of the results for the interim periods. The Company considers the
disclosures adequate to make the information presented not misleading.

2

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- ---------------------------------------- Alpha Industries, Inc. and Subsidiaries

Consolidated Balance Sheets
(In thousands except share and per share amounts)


<TABLE>
<CAPTION>
                                                                                 Oct. 1,        April 2,
                                                                                  1995            1995
                                                                               (unaudited)      (audited)
- ---------------------------------------------------------------------------------------------------------
<S>                                                                             <C>             <C>
Assets
  Current assets
    Cash and cash equivalents at cost (approximates market)...............      $  2,104        $  3,510
    Accounts receivable...................................................        16,152          13,548
    Inventories (Note 1)..................................................        10,747           9,370
    Prepayments and other current assets..................................           565             756
                                                                                --------        --------
        Total current assets..............................................        29,568          27,184
                                                                                --------        --------
    Property, plant and equipment, less accumulated depreciation and
     amortization of $55,844 and $53,283..................................        21,828          20,489
    Other assets..........................................................           650             594
    Property held for resale (Note 2).....................................             -           1,900
                                                                                --------        --------
                                                                                $ 52,046        $ 50,167
                                                                                ========        ========

Liabilities And Stockholders' Equity
  Current liabilities
    Notes payable, bank (Note 3)..........................................      $  5,575        $  3,000

    Current maturities of long-term debt..................................           267             339
    Current maturities of capital lease obligations.......................           408             370
    Accounts payable......................................................         4,834           5,206
    Payroll, commissions and related expenses.............................         5,098           4,777
    Repositioning reserve.................................................           625             991
    Other accrued liabilities.............................................         1,652           1,518
                                                                                --------        --------
        Total current liabilities.........................................        18,459          16,201
                                                                                --------        --------
  Long-term debt..........................................................         1,617           4,744
                                                                                --------        --------
  Long-term capital lease obligations.....................................           784             754
                                                                                --------        --------
  Other long-term liabilities.............................................           886             794
                                                                                --------        --------
  Commitments and contingencies (Note 5)
  Stockholders' equity
    Common stock par value $.25 per share: authorized
     30,000,000 shares; issued 8,054,774 and 7,994,495 shares.............         2,014           1,999
    Additional paid-in capital............................................        28,335          27,921
    Retained earnings (deficit)...........................................           457          (1,738)
    Less - Treasury shares 246,052 and 262,886 shares at cost.............           311             330
           Unearned compensation-restricted stock.........................           195             178
                                                                                --------        --------
        Total stockholders' equity........................................        30,300          27,674
                                                                                --------        --------
                                                                                $ 52,046        $ 50,167
                                                                                ========        ========
- ---------------------------------------------------------------------------------------------------------
</TABLE>


The accompanying notes are an integral part of these financial statements.

                                                                               3

<PAGE>
 
Alpha Industries, Inc. and Subsidiaries ----------------------------------------

Consolidated Statements of Income
(Unaudited)
(In thousands except per share data)


<TABLE>
<CAPTION>
                                                 Second Quarter Ended              Six Months Ended
                                                Oct. 1,         Oct. 2,         Oct. 1,         Oct. 2,
                                                 1995            1994            1995            1994
- -------------------------------------------------------------------------------------------------------
<S>                                            <C>             <C>             <C>             <C>
  Net sales...............................     $ 23,733        $ 18,253        $ 46,167        $ 36,928
    Cost of sales.........................       15,836          12,856          30,888          25,913
    Research and development expenses.....        2,128             879           3,915           1,798
    Selling and administrative expenses...        4,308           3,559           8,737           7,337
    Repositioning credit..................            -               -            (320)              -
                                               --------        --------        --------        --------
  Operating income........................        1,461             959           2,947           1,880
  Interest expense........................         (232)           (190)           (441)           (385)
  Interest income and other, net..........           44              44              77              61
                                               --------        --------        --------        --------
  Income before income taxes..............        1,273             813           2,583           1,556
  Provision for income taxes..............          192             154             388             294
                                               --------        --------        --------        --------
  Net income..............................     $  1,081        $    659        $  2,195        $  1,262
                                               ========        ========        ========        ========
  Net income per share....................     $   0.13        $   0.08        $   0.27        $   0.16
                                               ========        ========        ========        ========
  Weighted average common shares and
   common share equivalents (Note 4)......        8,208           7,807           8,196           7,744
                                               ========        ========        ========        ========
- -------------------------------------------------------------------------------------------------------
</TABLE>


The accompanying notes are an integral part of these financial statements.

4

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- ---------------------------------------- Alpha Industries, Inc. and Subsidiaries

Consolidated Statements Of Cash Flows
(Unaudited)
(In thousands)


<TABLE>
<CAPTION>
                                                                               Six Months Ended
                                                                             Oct. 1,        Oct. 2,
                                                                              1995           1994
- ---------------------------------------------------------------------------------------------------
<S>                                                                         <C>            <C>
Cash flows from operating activities:
  Net income............................................................    $  2,195       $  1,262
  Adjustments to reconcile net income to net cash provided from
   (used for) operations:
    Depreciation and amortization of property, plant and equipment......       2,561          2,288
    Contribution of treasury shares to Savings and Retirement Plan......         220              -
    Amortization of unearned compensation - restricted stock, net.......          30             21
    Repositioning credit................................................        (320)             -
    Increase in other liabilities and long-term benefits................          92             50
    Increase in other assets............................................        (305)          (251)
    Change in assets and liabilities:
      Accounts receivable...............................................      (2,604)             4
      Inventories.......................................................      (1,377)          (858)
      Other current assets..............................................         191           (159)
      Accounts payable..................................................        (372)          (189)
      Other accrued liabilities and expenses............................         455           (185)
      Repositioning reserve.............................................        (366)          (587)
                                                                            --------       --------
        Net cash provided from operations...............................         400          1,396
                                                                            --------       --------
Cash flows from investing activities:
  Proceeds from sale of building........................................       2,465              -
  Additions to property, plant and equipment............................      (3,595)        (2,272)
                                                                            --------       --------
        Net cash used in investing activities...........................      (1,130)        (2,272)
                                                                            --------       --------
Cash flows from (used in) financing activities:
  Proceeds from notes payable...........................................       3,033         2,006
  Payments on long-term debt............................................      (3,657)          (164)
  Deferred charges related to long-term debt............................           4             (4)
  Payments on capital lease obligations.................................        (237)          (181)
  Proceeds from sale of stock...........................................          64             42
  Exercise of stock options.............................................         117             94
                                                                            --------       --------
        Net cash from (used in) financing activities....................        (676)         1,793
                                                                            --------       --------
Net increase (decrease) in cash and cash equivalents....................      (1,406)           917
Cash and cash equivalents, beginning of period..........................       3,510          1,691
                                                                            --------       --------
Cash and cash equivalents, end of period................................    $  2,104       $  2,608
                                                                            ========       ========
- ---------------------------------------------------------------------------------------------------
</TABLE>


Supplemental Disclosures:

Capital lease obligations of $305 thousand were incurred during the six months
ended October 1, 1995 when the Company entered into leases for new equipment.

The accompanying notes are an integral part of these financial statements.

                                                                               5

<PAGE>
 
Alpha Industries, Inc. and Subsidiaries ----------------------------------------

Notes  To  Consolidated Financial Statements

(unaudited)


Note 1    Inventories


<TABLE>
<CAPTION>
                                                         Oct. 1,       April 2,
Inventories consist of the following (in thousands):      1995           1995
- --------------------------------------------------------------------------------
<S>                                                     <C>            <C>
        Raw materials.............................      $  3,826       $  3,186
        Work-in-process...........................         5,620          4,950
        Finished goods............................         1,301          1,234
                                                        --------       --------
                                                        $ 10,747       $  9,370
                                                        ========       ========
- --------------------------------------------------------------------------------
</TABLE>


Note 2    Property Held for Resale 

In July, 1995, the Company sold its Methuen, Massachusetts plant. The Company
received net proceeds of $2.5 million and retired $3.5 million of related debt.
In order to repay the balance of the $3.5 million of debt, the Company borrowed
approximately $1 million under its line of credit agreement. During the first
quarter of fiscal 1996, the Company recorded a $320,000 repositioning credit,
attributable to the reversal of certain accruals for estimated carrying costs,
as a result of an earlier than expected disposition of this property.

Note 3    Notes Payable, Bank

In September, 1995 the Company entered into a $6.5 Working Capital Line of
Credit Agreement which expires on August 1, 1997 and a $5.0 million Equipment
Line of Credit Agreement which expires on July 31, 1996. These lines of credit
are collateralized by the assets of the Company, excluding real property, not
otherwise collateralized. Interest payments are due monthly at prime or LIBOR
plus 200 basis points. Commitment fees on these loan agreements are $25,000 for
the Equipment Line of Credit and 1/2% per year on the Working Capital Line of
Credit which is to be paid quarterly. At October 1, 1995, $5.6 million was
borrowed under the Working Capital Line of Credit Agreement.

Note 4    Earnings Per Share

Earnings per common share for the six months ended October 1, 1995 and 
October 2, 1994 were computed using the weighted average number of common shares
and common equivalent shares outstanding during the periods of 8,195,853 and
7,743,920 shares, respectively.

Note 5    Commitments and Contingencies

The Company is party to suits and claims arising in the normal course of
business. Management believes these are adequately provided for or will result
in no significant additional liability to the Company.

6

<PAGE>
 
- ---------------------------------------- Alpha Industries, Inc. and Subsidiaries
 
                               PART I - ITEM 2


Management's Discussion And Analysis of Financial Condition And Results Of 
Operations

Results of Operations

Sales for the first six months of fiscal 1996 increased 25.0% to $46.2 million
as compared to sales of $36.9 million for the first six months of fiscal 1995.
Sales for the second quarter of fiscal 1996 increased 30% to $23.7 million as
compared to sales of $18.3 million for the same period last year. The year and
quarter-to-date increases were attributable to increased unit sales volumes in
the Company's GaAs MMIC, ceramic and silicon discrete semiconductor products
lines, primarily into commercial wireless markets, which more than offset
declining military sales. Unit sales increases offset flat or declining average
selling prices in the Company's markets.

The increases in sales occurred despite the continued delay in volume shipments
under a $20 million contract to supply ceramic filters entered into with
Motorola in the third quarter of fiscal 1995. Motorola is working with the
Company to resolve a mechanical problem with the filter on a new manufacturing
line at Motorola.

Orders received by the Company during the first six months of fiscal 1996, which
do not include any material amount attributable to the Motorola ceramic filter
contract, increased 32.6% compared with the first six months of fiscal 1995. New
orders for the second quarter of fiscal 1996 increased 42.3% compared with the
second quarter of fiscal 1995.These new orders consisted primarily of ceramic
filter and resonator orders from other wireless OEMs as well as orders for GaAs
MMICs from wireless OEMs, including Motorola. The Company accordingly does not
expect the delay in the commencement of volume production under the Motorola
ceramic filter contract to have a material effect on its results of operations.

Gross profit for the first six months of fiscal 1996 increased 38.7% to $15.3
million or 33.1% of sales, as compared to $11.0 million or 29.8% of sales, for
the comparable period in fiscal 1995. Gross profit for the second quarter of
fiscal 1996 increased 46.3% to $7.9 million or 33.3% of sales as compared to
$5.4 million or 29.6% of sales. The improvement in gross profit was attributable
primarily to higher capacity utilization at the Company's Woburn, Massachusetts
manufacturing facility.

Research and development expenses increased 117.7% to $3.9 million, or 8.5% of
sales in the first six months of fiscal 1996 as compared to $1.8 million or 4.9%
of sales during the first six months of fiscal 1995. For the second quarter
ended October 1, 1995 research and development increased 142% to $2.1 million,
or 9.0% of sales as compared to $879,000 or 4.8% of sales. This increase was
primarily attributable to increased investment by the Company in the wireless
markets across all of its product lines. The Company will continue to invest in
product and process development in order to address the demands of the wireless
market.

Selling and administrative expenses increased 19.1% to $8.7 million or 18.9% of
sales in the first six months of fiscal 1996, as compared to $7.3 million, or
19.8% of sales for the same period in fiscal 1995. For the second quarter ended
October 1, 1995 selling and administrative expenses increased 21.0% to $4.3
million, or 18.2% of sales. Selling and administrative expenses increased
primarily as a result of training and other costs related to the early phases of
implementation of a new manufacturing and management information system, as well
as increased commissions related to higher sales volume.

The Company had a $320,000 repositioning credit during the first half of fiscal
1996, which resulted from the reversal of certain accruals for estimated
carrying costs as a result of an earlier than expected disposition of the
Methuen, Massachusetts facility.

Other expense for the first six months and quarter ended October 1, 1995
increased primarily as a result of interest expense attributable to higher 
short-term borrowings.

The Company's effective tax rate for the first six months of fiscal 1996 was
15.0% compared to the current combined federal, state and foreign rate of
approximately 40%. This rate differed from statutory rates primarily as a result
of the utilization of net operating loss carryforwards. At October 1, 1995, the
Company had available net operating loss carryforwards of approximately $23
million which expire commencing in 2004.

Financial Condition

At October 1, 1995, working capital totaled $11.1 million and included $2.1
million in cash and cash equivalents, compared with $11.0 million at the end of
fiscal 1995. In July, 1995, the Company sold its Methuen, Massachusetts plant
and received net proceeds of $2.5 million. In connection with the sale, using
the net proceeds and $1 million borrowed under its line of credit, the Company
retired $3.5 million of related debt. During the first six months of fiscal
1996, cash generated from the Company's operations combined with additional
borrowings under its line of credit were used to support increases in accounts
receivables and inventories and capital additions resulting from the growth in
new business. These capital additions included semiconductor and ceramic
manufacturing equipment, as well as various information technology equipment
purchased for an aggregate of $3.9 million. With the increased demand for its
wireless products, the Company expects to increase its investment in production
facilities and equipment by approximately $12 million in the next 12 months.

In September 1995, the Company entered into a $6.5 million working capital line
of credit agreement which expires on August 1, 1997, of which approximately $1.1
million was available at October 25, 1995, and a $5.0 million equipment line of
credit which expires on July 31, 1996, under which $1.0 million has been
borrowed by the Company at October 25, 1995. Advances under these lines of
credit bear interest at the prime rate or, at the Company's option, the LIBOR
rate plus 200 basis points. The Company is also seeking approval from the State
of Maryland for an additional $3 million of grant funding to finance the planned
expansion of its ceramic manufacturing facility. Other sources of financing have
also been or are being pursued, such as increasing the amount of the line of
credit, receiving additional grant funding, capital financing through leases and
any other sources of funding that may become available in order to finance the
currently planned expansion of $12.0 million.

                                                                               7

<PAGE>
 
Alpha Industries, Inc. and Subsidiaries ----------------------------------------


 
                         PART II - OTHER INFORMATION


Item 1      Legal Proceedings

The Company does not have any material pending legal proceedings other than 
routine litigation incidental to its business.

The Company has been notified by federal and state environmental agencies of 
its potential liability with respect to the following two sites: the Spectron, 
Inc. Superfund site in Elkton, Maryland; and the Seaboard Chemical Corporation 
site in Jamestown, North Carolina. In each case several hundred other companies 
have also been notified about their potential liability regarding these sites. 
The Company continues to deny that it has any responsibility with respect to 
these sites other than as a de minimis party. Management is of the opinion 
                            -- -------
that the outcome of the aforementioned environmental matters will not have 
a material effect on the Company's operations.


Item 4      Submission of Matters to a Vote of Security Holders

     (a)   On September 11, 1995, Alpha Industries, Inc. held its Annual 
     Meeting of Stockholders.

     (b)   At the Meeting, the Stockholders elected George S. Kariotis as a
     Class 3 Director to hold office for a three-year term until the 1998 Annual
     Meeting of Stockholders and until his successor has been duly elected and
     qualified. Votes were cast as follows: Mr. Kariotis 6,392,877 for and
     94,072 withheld. The terms of office as Directors of Arthur Pappas and
     Raymond Shamie continue after the Meeting until the 1997 Annual Meeting of
     Stockholders, and the terms of office as Directors of Martin J. Reid and
     Sidney Topol continue after the Meeting until the 1996 Annual Meeting of
     Stockholders.


Item 6      Exhibits And Reports On Form 8-K

     (a)  Exhibits

          (3)  Certificate of Incorporation and By-laws.

               (a)  Composite Certificate of Incorporation dated May 26, 1966 as
                    amended March 21, 1967 and October 27, 1967 (Filed as
                    Exhibits 3(a), (b) and (c) to Registrant's Registration
                    Statement on Form S-1 (Registration No. 2-27685)*, October
                    6, 1978 (Filed as Exhibit A to Proxy Statement dated July
                    27, 1978)*, October 22, 1979 (Filed as Exhibit (a)(3)(3) to
                    Annual Report on Form 10-K for fiscal year ended March 31,
                    1981)*, September 30, 1981 (Filed as Exhibit 20(b) to
                    Quarterly Report on Form 10-Q for quarter ended September
                    30, 1981)*, February 8, 1983 (Filed as Exhibit 19(a) to
                    Quarterly Report on Form 10-Q for quarter ended December 31,
                    1983)*, December 3, 1985 (Filed as Exhibit 3(a) to Annual
                    Report on Form 10-K for the year ended March 31, 1986)* and
                    October 20, 1986 (Filed as Exhibit 3(a) to Annual Report on
                    Form 10-K for the year ended March 31, 1987)*.

               (b)  Amended and restated By-laws of the Corporation dated April
                    30, 1992 (Filed as Exhibit 3(b) to the Annual Report on Form
                    10-K for the year ended March 29, 1992)*.

          (4)  Instruments defining rights of security holders, including 
               indentures.

               (a)  Specimen Certificate of Common Stock (Filed as Exhibit 4(a)
                    to Registration Statement on Form S-1 (Registration 
                    No. 2-25197))*.

               (b)  Frederick County Industrial Development Revenue Bond, Deed
                    of Trust, Loan Agreement and Guaranty and Indemnification
                    Agreement dated June 17, 1982 (Filed as Exhibit 4(g) to the
                    Registration Statement on Form S-8 filed July 29, 1982)*.
                    Bond and Loan Document 

8

<PAGE>
 
- ---------------------------------------- Alpha Industries, Inc. and Subsidiaries

                    Modification Agreement dated December 9, 1993 (Filed as
                    Exhibit 4(c) to the Quarterly Report on Form 10-Q for the
                    quarter ended December 26, 1993)*.

               (c)  Methuen, Massachusetts Industrial Revenue Mortgage,
                    Indenture of Trust and Agreement among Massachusetts
                    Industrial Finance Agency, Registrant and The First National
                    Bank of Boston, as Trustee; Guaranty Agreement among
                    Registrant, The First National Bank of Boston, as Trustee
                    and Massachusetts Industrial Finance Agency dated as of
                    August 1, 1984 and amended on November 20, 1990; and
                    Agreement between Massachusetts Industrial Finance Agency
                    and Registrant dated August 1, 1984 and amended November 20,
                    1990 (Original Agreement filed as Exhibit 4(b) to the
                    Quarterly Report on Form 10-Q for the quarter ended
                    September 30, 1984)* (Amendment filed as Exhibit 4(e) to the
                    Quarterly Report on Form 10-Q for the quarter ended December
                    30, 1990)*.

               (d)  Line of Credit Agreement between Registrant and Silicon
                    Valley Bank dated as of November 20, 1990 (Original
                    Agreement filed as Exhibit 4(f) to the Quarterly Report on
                    Form 10-Q for the quarter ended December 30, 1990)*; amended
                    September 1, 1991 (Filed as Exhibit 4(f) to the Quarterly
                    Report on Form 10-Q for the quarter ended September 29,
                    1991)*; amended September 8, 1992 (Filed as Exhibit 4(e) to
                    the Quarterly Report on Form 10-Q for the quarter ended
                    September 27, 1992)*; amended February 18, 1993 (Filed as
                    Exhibit 4(e) to the Annual Report on Form 10-K for the year
                    ended March 28, 1993)*, amended June 18, 1993 (Filed as
                    Exhibit 4(e) to the Quarterly Report on Form 10-Q for the
                    quarter ended October 2, 1994)*; amended September 3, 1993
                    (Filed as Exhibit 4(e) to the Quarterly Report on Form 10-Q
                    for the quarter ended September 26, 1993)*; amended April 1,
                    1994 (Filed as Exhibit 4(e) to the Quarterly Report on Form
                    10-Q for the quarter ended July 3, 1994)* and further
                    amended September 5, 1994 (Filed as Exhibit 4(e) to the
                    Quarterly Report on Form 10-Q for the quarter ended October
                    2, 1994)*.

               (e)  Loan Contract dated January 21, 1985, First Amendment to
                    Loan Contract dated October 11, 1985 and Second Amendment to
                    Loan Contract dated December 19, 1986 each between
                    Registrant, the City of Lawrence and the Lawrence
                    Redevelopment Authority; Guaranty Agreement dated January
                    21, 1985 and First Amendment to Guaranty Agreement dated
                    October 11, 1985, each between Registrant and the Lawrence
                    Redevelopment Authority; and Urban Development Action Grant
                    (UDAG) (Grant Number: B-84-AA-25-0142) and Amendment
                    thereto, each dated April 6, 1984 and each between the City
                    of Lawrence and the United States Department of Housing and
                    Urban Development (Filed as Exhibit 4(k) to the Annual
                    Report on Form 10-K for the fiscal year ended March 31,
                    1986)*.

               (f)  Amended and Restated Rights Agreement dated as of November
                    24, 1986, as amended and restated July 3, 1990 and as
                    further amended September 9, 1990 and September 24, 1990,
                    between Registrant and The First National Bank of Boston, as
                    Rights Agent (The July 3, 1990 restatement and the September
                    9, 1990 and September 24, 1990 amendments were filed as
                    Exhibit 4 to the Current Report on Form 8-K dated July 3,
                    1990 and Exhibits 4(a) and 4(b) to the Current Report on
                    Form 8-K dated September 18, 1990, respectively)*.

               (g)  Loan and Security Agreement dated December 15, 1993 between
                    Trans-Tech, Inc., and County Commissioners of Frederick
                    County (Filed as Exhibit 4(h) to the Quarterly Report on
                    Form 10-Q for the quarter ended July 3, 1994)*.

               (h)  Stock Purchase Warrant for 50,000 shares of the Registrant's
                    Common Stock issued to Silicon Valley Bank as of April 1,
                    1994 (Filed as Exhibit 4(i) to the Quarterly Report on Form
                    10-Q for the quarter ended July 3, 1994)*.

               (i)  Mortgage, Fixture Financing Statement and Assignment of
                    Leases and Rents dated September 16, 1994 between The First
                    National Bank of Boston, as Trustee, and Registrant and
                    First 

                                                                               9

<PAGE>
 
Alpha Industries, Inc. and Subsidiaries ----------------------------------------

                    Amendment to Mortgage, Fixture Financing Statement and
                    Assignment of Leases and Rents dated October 12, 1994
                    between The First National Bank of Boston, as Trustee, and
                    Registrant. Amendment No. 1 to Amended and Restated Guaranty
                    Agreement dated September 16, 1994 between The First
                    National Bank of Boston, as Trustee, The First National Bank
                    of Boston and the Massachusetts Industrial Finance Agency
                    (Filed as Exhibit 4(j) to the Quarterly Report on Form 10-Q
                    for the quarter ended October 2, 1994)*.

               (j)  Credit Agreement dated September 29, 1995 between Alpha
                    Industries, Inc, and Trans-Tech Inc. and Fleet Bank of
                    Massachusetts, N.A. and Silicon Valley Bank.

          (10) Material Contracts.

               (a)  Alpha Industries, Inc., 1986 Long-Term Incentive Plan as
                    amended (Filed as Exhibit 10(a) to the Quarterly Report on
                    Form 10-Q for the quarter ended October 2, 1994)*. (1)

               (b)  Alpha Industries, Inc., Employee Stock Purchase Plan as
                    amended October 22, 1992 (Filed as Exhibit 10(b) to the
                    Annual Report on Form 10-K for the fiscal year ended March
                    28, 1993)*. (1)

               (c)  SERP Trust Agreement between the Registrant and the First
                    National Bank of Boston as Trustee dated April 8, 1991
                    (Filed as Exhibit 10(c) to the Annual Report on Form 10-K
                    for the fiscal year ended March 31, 1991)*. (1)

               (d)  Digital Business Agreement between Digital Equipment
                    Corporation and Registrant dated April 2, 1990. Master Lease
                    Addendum (Ref. No. 6260) to Digital Business Agreement No.
                    3511900 between Digital Equipment Corporation and Registrant
                    dated April 2, 1990 (Filed as Exhibit 10(g) to the Annual
                    Report on Form 10-K for the fiscal year ended March 29,
                    1992)*.

               (e)  Common Stock Purchase Agreement dated November 8, 1990
                    between Registrant and Shamie Management Corporation (Filed
                    as Exhibit 10(h) to the Annual Report on Form 10-K for the
                    fiscal year ended March 29, 1992)*. (1)

               (f)  Alpha Industries, Inc., Long-Term Compensation Plan dated
                    September 24, 1990 (Filed as Exhibit 10(i) to the Annual
                    Report on Form 10-K for the fiscal year ended March 29,
                    1992)*; amended March 28, 1991 (Filed as Exhibit 10 (a) to
                    the Quarterly Report on Form 10-Q for the quarter ended June
                    27, 1993)* and as further amended October 27, 1994 (Filed as
                    Exhibit 10(f) to the Annual Report on Form 10-K for the
                    fiscal year ended April 2, 1995)*. (1)

               (g)  Master Equipment Lease Agreement between AT&T Commercial
                    Finance Corporation and the Registrant dated June 19, 1992
                    (Filed as Exhibit 10(j) to the Annual Report on Form 10-K
                    for the fiscal year ended March 28, 1993)*.

               (h)  Employment Agreement dated October 1, 1990 between the
                    Registrant and Martin J. Reid, as amended March 26, 1992 and
                    amended January 19, 1993 (Filed as Exhibit 10(k) to the
                    Annual Report on Form 10-K for the fiscal year ended March
                    28, 1993)* and amended August 10, 1993 (Filed as Exhibit
                    10(j) to the Quarterly Report on Form 10-Q for the quarter
                    ended July 3, 1994)*. (1)

               (i)  Employment Agreement dated October 1, 1990 between the
                    Registrant and George S. Kariotis, as amended May 15, 1991
                    and amended January 22, 1993 (Filed as Exhibit 10(l) to the
                    Annual Report on Form 10-K for the fiscal year ended March
                    28, 1993)* and amended August 10, 1993 (Filed as Exhibit
                    10(k) to the Quarterly Report on Form 10-Q for the quarter
                    ended July 3, 1994)*. (1)

               (j)  Employment Agreement dated October 1, 1990 between the
                    Registrant and Patrick Daniel Gallagher, as amended March
                    24, 1992 and amended by Second Amendment dated September 29,
                    1992 and Third Amendment dated January 20, 1993 (Filed as
                    Exhibit 10(m) to 

10

<PAGE>
 
- ---------------------------------------- Alpha Industries, Inc. and Subsidiaries

                    the Annual Report on Form 10-K for the fiscal year ended
                    March 28, 1993)* and Fourth Amendment dated August 3, 1994
                    (Filed as Exhibit 10(l) to the Quarterly Report on Form 10-Q
                    for the quarter ended October 2, 1994)*. (1)

               (k)  Employment Agreement dated April 28, 1994 between the
                    Registrant and Joseph J. Alberici. (Filed as Exhibit 10(o)
                    to the Annual Report on Form 10-K for the fiscal year ended
                    April 3, 1994)*; and further amended August 3, 1994 (Filed
                    as Exhibit 10(n) to the Quarterly Report on Form 10-Q for
                    the quarter ended October 2, 1994)*. (1)

               (l)  Consulting Agreement dated August 13, 1992 between the
                    Registrant and Sidney Topol. (Filed as Exhibit 10(p) to the
                    Annual Report on Form 10-K for the fiscal year ended April
                    3, 1994)*. (1)

               (m)  Employment Agreement dated August 3, 1994 between the
                    Registrant and Thomas C. Leonard (Filed as Exhibit 10(p) to
                    the Quarterly Report on Form 10-Q for the quarter ended
                    October 2, 1994)*. (1)

               (n)  Master Lease Agreement between Comdisco, Inc. and the
                    Registrant dated September 16, 1994 (Filed as Exhibit 10(q)
                    to the Quarterly Report on Form 10-Q for the quarter ended
                    October 2, 1994)*.

               (o)  Alpha Industries, Inc., 1994 Non-Qualified Stock Option Plan
                    for Non-Employee Directors (Filed as Exhibit 10(r) to the
                    Quarterly Report on Form 10-Q for the quarter ended October
                    2, 1994)*. (1)

               (p)  Alpha Industries Executive Compensation Plan dated January
                    1, 1995 and Trust for the Alpha Industries Executive
                    Compensation Plan dated January 3, 1995 (Filed as Exhibit
                    10(p) to the Annual Report on Form 10-K for the fiscal year
                    ended April 2, 1995)*. (1)

               (q)  Letter of Employment dated January 24, 1995 between the
                    Registrant and David J. Aldrich (Filed as Exhibit 10(q) to
                    the Annual Report on Form 10-K for the fiscal year ended
                    April 2, 1995)*. (1)

               (r)  Alpha Industries, Inc. Savings and Retirement Plan dated
                    March 31, 1995 (Filed as Exhibit 10(r) to the Annual Report
                    on Form 10-K for the fiscal year ended April 2, 1995)*. (1)

          (11) Statement re computation of per share earnings**.

          (27) Financial Data Schedule.

               (b)  Reports on Form 8-K

                    No reports on Form 8-K were filed with the Securities and
                    Exchange Commission during the fiscal quarter ended 
                    October 1, 1995.


- ---------------
*Not filed herewith. In accordance with Rule 12b-32 promulgated pursuant to 
the Securities Exchange Act of 1934, as amended, reference is hereby made to
documents previously filed with the Commission, which are incorporated by
reference herein.
**Reference is made to Note 4 of the notes to Consolidated Financial Statements
on Page 6 of this Quarterly Report on Form 10-Q, which Note 4 is hereby
incorporated by reference herein.
(1) Management Contracts.

                                                                              11

<PAGE>
 

                                  Signatures
                                  ----------

Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.

Date: October 25, 1995
      ----------------


                    Alpha Industries, Inc. and Subsidiaries
                    ---------------------------------------
                                  Registrant



                    /s/ Martin J. Reid  
                    ---------------------------------------
                    Martin J. Reid
                    Chief Executive Officer
                    President and Director 



                    /s/ David J. Aldrich    
                    ---------------------------------------
                    David J. Aldrich
                    Chief Financial Officer
                    Principal Financial Officer   



                    /s/ Paul E. Vincent   
                    ---------------------------------------
                    Paul E. Vincent
                    Corporate Controller
                    Principal Accounting Officer    

12





<PAGE>
 
                               CREDIT AGREEMENT
                               ----------------

                        Dated as of September 29, 1995

                                     among

                            ALPHA INDUSTRIES, INC.,
                               TRANS-TECH, INC.

                                      and

                       FLEET BANK OF MASSACHUSETTS, N.A.

                                      and

                              SILICON VALLEY BANK

                        ______________________________

                     Working Capital Line of Credit Loans

                                  $6,500,000

                                      and

                        Equipment Line of Credit Loans

                                  $5,000,000


                       ________________________________

<PAGE>
 
                               TABLE OF CONTENTS
                               -----------------


<TABLE>
<CAPTION>
<S>         <C>                                                                            <C>   
Section 1   Working Capital Line of Credit Loans.........................................  1
            1.1    Amount................................................................  1
            1.2    Working Capital Line of Credit Commitment.............................  1
            1.3    Working Capital Line of Credit Notes..................................  1
            1.4    Requests For Line of Credit Loans.....................................  2
            1.5    Working Capital BorrowingBase.........................................  2
            1.6    Maturity Date of Working Capital Line of Credit Loans.................  2
            1.7    Termination of Working Capital Line Commitment........................  2

Section 2   Equipment Line of Credit Loans...............................................  2
            2.1    Amount................................................................  2
            2.2    Equipment Notes.......................................................  2
            2.3    Requests For Equipment Line Loans.....................................  3
            2.4    Restrictions on Advances..............................................  3
            2.5    Maturity Date of Equipment Line Loans.................................  3
            2.6    Termination of Equipment Line Commitment..............................  3

Section 3   Interest Rates; Payments and Optional Prepayments............................  3
            3.1    Interest Rates........................................................  3
            3.2    Manner and Place of Payment...........................................  4
            3.3  Payments Due on Saturdays, Sundays and Holidays.........................  4
            3.4  Computations............................................................  4
            3.5  Minimum and Maximum Amounts.............................................  4
              Certain Notices............................................................  5
            3.7  Additional Costs........................................................  5
            3.8  Limitation on Types of Loans............................................  6
            3.9 illegality...............................................................  6
            3.10  Substitute Prime Rate Loans............................................  6
            3.11  Compensation...........................................................  7
            3.12
  Capital Adequacy.......................................................  7
            3.13  Optional Prepayments...................................................  8

Section 4   Security and Guaranties......................................................  8
            4.1    Security Interests....................................................  8
            4.2    Guaranty..............................................................  8

Section 5   Conditions Precedent.........................................................  8
            5.1    This Agreement, the Borrower Notes and the Security Instruments.......  8
            5.2    No Default............................................................  9
            5.3    Correctness of Representations........................................  9
            5.4    Opinion of Counsel for the Borrowers..................................  9
            5.5    Governmental Approvals................................................  9
            5.6    Filing of Financing Statements, etc...................................  9
            5.7    Supporting Documents..................................................  9
            5.8    Facility Fees......................................................... 10
            5.9    Compliance and Borrowing Base Certificates............................ 10
            5.10   Legal Matters......................................................... 10

Section 6   Representations and Warranties............................................... 10
            6.1    Corporate Status...................................................... 10
            6.2    No Violation.......................................................... 10
</TABLE>
 

<PAGE>
 
                                      -2-

<TABLE> 
<S>        <C>                                                                               <C> 
           6.3    Corporate Power and Authority............................................  11
           6.4    Enforceability...........................................................  11
           6.5    Governmental Approvals...................................................  11
           6.6    Financial Statements.....................................................  11
           6.7    No Material Change.......................................................  12
           6.8    Litigation...............................................................  12
           6.9    Compliance with Other Instruments; Compliance with Law...................  12
           6.10   Subsidiaries.............................................................  12
           6.11   Investment Borrower Status; Limits on Ability to Incur Indebtedness......  12
           6.12   Title to Property........................................................  12
           6.13   ERISA....................................................................  12
           6.14   Taxes....................................................................  12
           6.15   Environmental Matters....................................................  13
           6.16   Intellectual Property....................................................  13
           6.17   Working Capital Borrowing Base...........................................  13

Section 7  Affirmative Covenants...........................................................  13
           7.1    Maintenance of Existence.................................................  14
           7.2    Taxes and Other Liens....................................................  14
           7.3    Insurance................................................................  14
           7.4    Financial Statements, Etc................................................  14
           7.5    Notice of Default........................................................  15
           7.6    Environmental Matters....................................................  15
           7.7    ERISA Information........................................................  16
           7.8    Inspection...............................................................  17
           7.9    Use of Proceeds..........................................................  17
           7.10   Further Assurances.......................................................  17
           7.11   Subsidiaries.............................................................  17
           7.12   Intellectual Property....................................................  17

Section 8  Negative Covenants..............................................................  17
           8.1    ERISA....................................................................  17
           8.2    Transactions with Affiliates.............................................  18
           8.3    Consolidation, Merger or Acquisition.....................................  18
           8.4    Disposition of Assets....................................................  18
           8.5    Indebtedness.............................................................  19
           8.6    Liens....................................................................  19
           8.7    Restricted Payments......................................................  20
           8.8    Investments..............................................................  20
           8.9    Sale and Leaseback.......................................................  21
           8.10   Additional Stock Issuance by Subsidiaries................................  21
           8.11   Quick Ratio..............................................................  21
           8.12   Minimum Profitability....................................................  21
           8.13   Leverage.................................................................  21
           8.14   Tangible Net Worth.......................................................  21
           8.15   Cash Flow Coverage.......................................................  21
           8.16   Capital Expenditures.....................................................  21

Section 9  Events of Default...............................................................  21
           9.1    Events of Default........................................................  21
           9.2    Remedies Upon an Event of Default........................................  23
</TABLE>
 

<PAGE>
 
                                      -3-


<TABLE> 
<CAPTION> 
<S>           <C>                                                                                <C> 
Section 10 The Collateral Agent................................................................  24
              10.1   Appointment of Collateral Agent; Powers and Immunities....................  24
              10.2   Actions By Collateral Agent...............................................  24
              10.3   Indemnification...........................................................  25
              10.4   Reimbursement.............................................................  25
              10.5   Non-Reliance on Collateral Agent and Other Banks..........................  25
              10.6   Resignation or Removal of Collateral Agent................................  26
              10.7   Ratable Sharing...........................................................  26

Section 11    Definitions......................................................................  26
              11.1   Certain Definitions.......................................................  26

Section 12    Miscellaneous....................................................................  36
              12.1   Accounting Terms and Definitions..........................................  36
              12.2   Amendments, Etc...........................................................  36
              12.3   Notices, Etc..............................................................  36
              12.4   No Waiver; Remedies.......................................................  36
              12.5   Right of Set-off..........................................................  37
              12.6   Expenses; Indemnification.................................................  37
              12.7   Binding Effect............................................................  37
              12.8   Severability..............................................................  38
              12.9   GOVERNING LAW.............................................................  38
              12.10  WAIVER OF JURY TRIAL......................................................  38
              12.11  VENUE, CONSENT TO SERVICE OF PROCESS......................................  38
              12.12  Headings..................................................................  39
              12.13  Counterparts..............................................................  39
              12.14  Joint and Several Obligations.............................................  39
 
Exhibits And Schedules
 
A-1     -     Working Capital Line of Credit Note (SVB)
A-2     -     Working Capital Line of Credit Note (Fleet)
A-3     -     Equipment Line of Credit Note
B-1     -     Security Agreement (Alpha)
B-2     -     Security Agreement (Trans-Tech)
C       -     Pledge Agreement
D       -     Guaranty (Alpha Securities Corp.)
E       -     Guarantor Security Agreement (Alpha Securities Corp.)
F       -     Compliance Certificate
G       -     Borrowing Base Certificate

Schedule A

A       -     Disclosure Schedule
B       -     Schedule of Approved Foreign Account Debtors
</TABLE>
 

<PAGE>
 
                                      -1-

                               CREDIT AGREEMENT



       THIS CREDIT AGREEMENT, dated as of September 29, 1995 by and among ALPHA
INDUSTRIES, INC., a Delaware corporation with its principal place of business at
20 Sylvan Road, Woburn, Massachusetts 01801 ("Alpha"), TRANS-TECH, INC., a
                                              -----                       
Maryland corporation with its principal place of business at 5520 Adamstown
Road, Adamstown, Maryland ("Trans-Tech"), and FLEET BANK OF MASSACHUSETTS, N.A.,
                            ----------                                          
a national banking association with its principal place of business at Fleet
Center, 75 State Street, Boston, Massachusetts 02109-1810 (together with its
successors, "Fleet"), and SILICON VALLEY BANK, a California-chartered bank, with
             -----                                                              
its principal place of business at 3003 Tasman Drive, Santa Clara, California
95054 with a loan production office located at Wellesley Office Park, 45 William
Street, Wellesley, Massachusetts 02181, doing business under the name Silicon
Valley East (together with its successors, "SVB").  Alpha and Trans-Tech are
                                            ---                             
sometimes each referred to herein as a "Borrower" and together as the
                                        --------                     
"Borrowers."  SVB and Fleet are sometimes each referred to herein as a "Bank")
 ---------                                                              ----  
and collectively as the "Banks."  SVB in its capacity as collateral agent for
                         -----                                               
the Banks is referred to herein as the "Collateral Agent."
                                        ----------------  

       Section 1     Working Capital Line of Credit Loans.
       ---------     ------------------------------------ 

               1.1   Amount.  Subject to and upon the terms and conditions set
                     ------
forth below, each of the Banks severally agrees to make loans (each a "Working
                                                                      --------
Capital Line of Credit Loan" and collectively, the "Working Capital Line of
- ---------------------------                         -----------------------
Credit Loans") to the Borrowers under this Section 1.1 from time to time to and
- -------------
including August 1, 1997 (the "Working Capital Commitment Expiration Date"),
                               ------------------------------------------
unless earlier terminated pursuant to Section 1.7, in an aggregate principal
amount not to exceed at any one time outstanding their respective Working
Capital Line of Credit Commitments as set forth in Section 1.2 below (together,
the "Total Working Capital Line Commitment"), subject to the limitation set
     -------------------------------------
forth in Section 1.5. Within the limit of the Working Capital Line Commitment,
the Borrowers may borrow, repay and reborrow at any time or from time to time
until the Working Capital Commitment Expiration Date, or the termination of the
Working Capital Line Commitment, whichever occurs earlier.

               1.2   Working Capital Line of Credit Commitment.  The Total
                     -----------------------------------------
Working Capital Line Commitment shall be $6,500,000 in the aggregate; the
Working Capital Line Commitment of SVB shall be $4,000,000; and the Working
Capital Line Commitment of Fleet shall be $2,500,000, provided, however, the
Borrowers agree to furnish to the Banks on or before October 31, 1995 a
Certificate of the Secretary or Assistant Secretary of each Borrower with
respect to resolutions of their respective Board of Directors authorizing
working capital borrowings up to $7,500,000 together with amended and restated
working capital notes in the appropriate amounts, upon receipt of which by the
Banks, the Total Working Capital Line Commitment shall be increased to
$7,500,000 in the aggregate, the Working Capital Line Commitment of SVB shall be
$4,500,000 and the Working Capital Line Commitment of Fleet shall be $3,000,000.

               1.3   Working Capital Line of Credit Notes.  The Working Capital
                     ------------------------------------
Line of Credit Loans made by each Bank shall be evidenced (i) in the case of
SVB, by a promissory note payable to the order of SVB with interest in
accordance with the terms of the Promissory Note of the Borrowers to be issued
in substantially the form of attached Exhibit A-1, dated the date hereof and
                                      -----------

<PAGE>
 
                                      -2-

(ii) in the case of Fleet by a promissory note payable to the order of Fleet
with interest in accordance with the terms of the Promissory Note of the
Borrowers to be issued in substantially the form of attached Exhibit A-2, dated
                                                             -----------
the date hereof (each a "Working Capital Note" and together the "Working Capital
                         --------------------                    ---------------
Notes").
- -----

               1.4   Requests For Line of Credit Loans.  Whenever either
                     ---------------------------------
Borrower desires to obtain a Working Capital Line of Credit Loan, such Borrower
shall notify SVB in accordance with the provisions of 3.6 below. Not later than
1:00 p.m. (Boston time) on the date specified for the making of each such
Working Capital Line of Credit Loan, each Bank shall make available to SVB, at
SVB's principal office, an amount equal to such Bank's respective Working
Capital Commitment Percentage multiplied by the amount of the Working Capital
Line of Credit Loan requested as set forth above. Subject to the terms and
conditions of this Agreement, the amount so received by SVB shall be made
available to the Borrowers by crediting the same in immediately available funds,
to the Alpha's regular deposit account with SVB.

               1.5   Working Capital Borrowing Base.  The Borrowers shall not
                     ------------------------------
permit, or request any advance hereunder that would cause, the sum of the
aggregate unpaid principal amount of all Working Capital Line of Credit Loans
under the Total Working Capital Line Commitment (the "Working Capital Extensions
                                                      --------------------------
of Credit"), to exceed at any time an amount equal to the lesser of (i) total
- ---------
the Working Capital Line Commitment or (ii) 85% of all Eligible Domestic
Accounts Receivable and 85% of all Eligible International Accounts Receivable at
such time, such amount, (the "Working Capital Borrowing Base"). If at any time
                              ------------------------------
the aggregate principal amount of all Working Capital Extensions of Credit
exceeds the Working Capital Borrowing Base, the Borrowers shall, on the next
Banking Day, prepay such excess principal amount together with accrued interest
thereon at the applicable rate.

               1.6   Maturity Date of Working Capital Line of Credit Loans.  All
                     -----------------------------------------------------
Working Capital Line of Credit Loans shall mature and the total unpaid principal
amount thereunder shall be due and payable on August 1, 1997 (the "Working
                                                                   ------- 
Capital Line Maturity Date"), at which time all amounts advanced under this
- --------------------------
Section 1 shall be immediately due and payable.

               1.7   Termination of Working Capital Line Commitment.  The
                     ----------------------------------------------
Borrowers, upon (a) notice to the Banks in accordance with the provisions of
Section 3.6 and (b) the repayment in full of the outstanding principal balance
of the Working Capital Line of Credit Loans (and accrued interest thereon) and
the payment in full of the unpaid balance of the Facility Fee provided for in
Section 5.8 through the Working Capital Commitment Expiration Date together with
any expenses or other fees owed by the Borrowers to the Banks under or pursuant
to this Agreement, may elect to permanently terminate the Total Working Capital
Line Commitment.


       Section 2     Equipment Line of Credit Loans.
       ---------     ------------------------------ 

               2.1   Amount.  Subject to and upon the terms and conditions set
                     ------
forth below, Fleet agrees to make loans (each an "Equipment Line of Credit
                                                  ------------------------  
Loan") and collectively, the "Equipment Line of Credit Loans") to the Borrowers
- ----                          ------------------------------    
under this Section 2.1 from time to time to and including July 31, 1996 (the
"Equipment Line Commitment Expiration Date"), unless earlier terminated pursuant
 ----------------------------------------- 
to Sections 2.6 or 9.2, in an aggregate amount not to exceed at any one time
outstanding $5,000,000 (the "Equipment Line Commitment"), subject to the
                             -------------------------  
limitation set forth in Section 2.4.

               2.2   Equipment Notes.  The Equipment Line of Credit Loans shall
                     ---------------
be evidenced by and payable with interest in accordance with the note of the
Borrowers in the form of attached

<PAGE>
 
                                      -3-

Exhibit A-3, dated the date hereof (the "Equipment Line Note"). The Working
- -----------                              -------------------
Capital Line Notes and the Equipment Line Note are sometimes together referred
to herein as the "Borrower Notes".
                  --------------

               2.3   Requests For Equipment Line Loans.  Either Borrower may
                     ---------------------------------
make requests of Fleet for Equipment Line of Credit Loans, and Fleet shall make
such loans in the same manner as provided in Section 1.4 and Section 3.6 with
respect to Working Capital Line of Credit Loans, except that together with the
notice of borrowing, such Borrower shall furnish to Fleet copies of all invoices
for items of Eligible Equipment and such other information as Fleet shall
reasonably request.

               2.4   Restrictions on Advances.  Equipment Line of Credit Loans
                     ------------------------
may be made only with respect to an item or items of Eligible Equipment
specifically identified in accordance with Section 2.3, and the principal amount
of any such Equipment Line of Credit Loans may not exceed 80% of the invoice
price of such item or items of Eligible Equipment, not including prepackaged
software and soft costs, sales taxes, shipping charges, installation charges,
training charges and similar charges and expenses.

               2.5   Maturity Date of Equipment Line Loans.  All Equipment Line
                     -------------------------------------
of Credit Loans shall be repayable in installments in accordance with the terms
of the Equipment Line Note, provided that all Equipment Line of Credit Loans
shall mature and the total principal amount thereunder shall be payable on
August 1, 1999 (the "Equipment Line Maturity Date"), at which time all amounts
                     ----------------------------
advanced under this Section 2 shall be immediately due and payable.

               2.6   Termination of Equipment Line Commitment.  The Borrowers,
                     ----------------------------------------
upon notice to Fleet in accordance with the provisions of Section 3.6, and the
repayment in full of the outstanding principal balance of the Equipment Line of
Credit Loans (and accrued interest thereon) and the payment in full of any
expenses or other fees owed by the Borrowers to Fleet under or pursuant to the
Equipment Line Commitment and the Equipment Line of Credit Loans, may elect to
permanently terminate the Equipment Line Commitment.

       Section 3     Interest Rates; Payments and Optional Prepayments.
       ---------     ------------------------------------------------- 

               3.1   Interest Rates.
                     -------------- 

               (a)  The Borrowers agree to pay interest on the unpaid principal
amount of each Working Capital Line of Credit Loan for each day from and
including the date such Working Capital Line of Credit Loan was made to but
excluding the date the principal on such Working Capital Line of Credit Loan is
due (whether at maturity, by acceleration or otherwise), at the fluctuating
rates per annum:

               (i)    for Prime Rate Loans, at the Prime Rate per annum; and

               (ii)   for LIBOR Loans, at the LIBOR Rate, plus 200 basis points
                                                          ---- 
                      per annum.

               (b)  The Borrowers agree to pay interest on the unpaid principal
amount of each Equipment Line of Credit Loan for each day from and including the
date such Equipment Line of Credit Loan was made to but excluding the date the
principal on such Equipment Line of Credit Loan is due (whether at maturity, by
acceleration or otherwise), at the following fluctuating rates per annum:

               (i)    for Prime Rate Loans, at the Prime Rate per annum; and

<PAGE>
 
                                      -4-

             (ii)   for LIBOR Loans, at the LIBOR Rate, plus 200 basis points
                                                        ----
                    per annum.
              
             (c)  Notwithstanding the foregoing, the Borrowers will pay to the
Banks interest at the applicable Post-Default Rate on any principal of any
Working Capital Line of Credit Loan and any Equipment Line of Credit Loans
(collectively, the "Borrower Loans") and on any other amount payable by the
                    --------------
Borrowers hereunder (but, if such amount is interest, only to the extent legally
enforceable), which shall not be paid in full when due (whether at stated
maturity, by acceleration or otherwise), for the period commencing on the due
date thereof until the same is paid in full. Accrued interest on each Prime Rate
Loan and LIBOR Loan shall be payable monthly in arrears on the first day of each
month and in any event, upon the payment, prepayment or conversion thereof, but
only on the principal so paid or prepaid or converted; provided that interest
                                                       --------
payable at the Post-Default Rate shall be payable from time to time on demand of
any Bank. Promptly after the determination of any interest rate provided for
herein or any change therein, each Bank shall notify the Borrowers thereof.


             Notwithstanding the foregoing provisions of this Section 3.1, if at
any time the rate of interest set forth above (the "Stated Rate") exceeds the
                                                    -----------              
maximum non-usurious interest rate permissible for any Bank to charge commercial
borrowers under applicable law (the "Maximum Rate"), the rate of interest
                                     ------------                        
charged on any Borrower Loans by any Bank hereunder shall be limited to the
Maximum Rate.

             In the event any Bank ever receives, collects or applies as
interest any sum in excess of the Maximum Rate, such excess amount shall be
applied to the reduction of the principal balance of the Borrower Loans in
respect of which such interest was paid or to other amounts (other than
interest) payable hereunder, and if no such principal is then outstanding, such
excess or part thereof remaining shall be paid to the Borrowers.

             3.2   Manner and Place of Payment.  All payments under this
                   ---------------------------
Agreement or otherwise in respect of any Borrower Loan shall be made not later
than 2:00 p.m. (Boston Time) on the date when due and shall be made in
immediately available funds at the Office of the Bank which has made such
Borrower Loan or by a Borrower's check drawn on the depositary account(s)
maintained by such Borrower with such Bank payable to such Bank or its order.
All payments shall be made without setoff, counterclaim, withholding or
reduction of any kind whatsoever. Each Borrower hereby requests and authorizes
each Bank to debit any of such Borrower's accounts with such Bank for payments
of interest and principal due on the Borrower Loans and any other obligations
owing by the Borrowers to such Bank. Each Bank will notify the Borrowers of all
debits which such Bank makes against a Borrower's accounts. Any such debits
against a Borrower's accounts in no way shall be deemed a setoff.

             3.3   Payments Due on Saturdays, Sundays and Holidays.  Whenever
                   -----------------------------------------------
any payment to be made hereunder or under the Borrower Notes shall be due on a
day which is not a Banking Day, such payment may be made on the next succeeding
Banking Day, and such extension of time shall be included in computing any
interest or fees due.

             3.4   Computations.  Interest on the Borrower Loans shall be
                   ------------
computed on the basis of a year of 360 days and actual days elapsed (including
the first day but excluding the last day) occurring in the period for which
payable.

             3.5   Minimum and Maximum Amounts.  Each borrowing, conversion and
                   ---------------------------                                 
prepayment of principal of Borrower Loans shall be in an aggregate principal
amount equal to (a) in the case of LIBOR Loans,$200,000 or a larger multiple of
$50,000 and (b) in the case of Prime Rate Loans, without any minimum amount or
any minimum integral multiple thereof (conversions or 

<PAGE>
 
                                      -5-

prepayments of Borrower Loans of different Types or, in the case of LIBOR Loans,
having different Interest Periods, at the same time hereunder to be deemed
separate conversions and prepayments for purposes of the foregoing, one for each
Type or Interest Period); provided that any payment or prepayment in full of any
                          --------                                              
Borrower Loans may be in the aggregate outstanding principal amount thereof.

               3.6   Certain Notices.  Notices to SVB in the case of the Total
                     ---------------                                          
Working Capital Line Commitment and Working Capital Line of Credit Loans and to
Fleet in the case of the Equipment Line Commitment and Equipment Line Loans of
(a) termination of the Working Capital Line of Credit Commitment or the
Equipment Line Commitment, as the case may be, (b) borrowings of Borrower Loans,
(c) conversions and prepayments of Borrower Loans and of the duration of
Interest Periods, shall be irrevocable and shall be effective only if received
by the Bank in question not later than 12:00 Noon (Boston time) on the number of
Banking Days prior to the date of the termination, borrowing, conversion and/or
prepayment specified below:


<TABLE>
<CAPTION>
                                                       Number of
                                                       Banking Days
                                                       Prior Notice
                                                       ------------
     <S>                                               <C>
     Termination of Commitment                              2
 
     Borrowings, or prepayment of Prime
     Rate Loans                                             1
 
     Prepayment of, conversion into, or duration of
     Interest Periods for, LIBOR Loans                      3
</TABLE>


Each notice of borrowing, conversion or prepayment shall specify, whether it is
a Working Capital Line of Credit Loan or Equipment Line of Credit Loan, the
amount, the Type of the Borrower Loan to be borrowed, converted or prepaid, the
date of borrowing, conversion or prepayment (which shall be a Banking Day in the
case of the prepayment of a Prime Rate Loan, or a Working Day in the case of the
conversion or prepayment of a LIBOR Loan) and, in the case of LIBOR Loans, the
duration of the Interest Period therefor (subject to the definition of Interest
Period).  Each such notice of duration of an Interest Period shall specify the
Borrower Loans to which such Interest Period is to relate.  In the event that
the Borrowers fail to select the duration of any Interest Period for any LIBOR
Loan within the time period and otherwise as provided in this Section 3.6, such
LIBOR Loan will be automatically converted into a Prime Rate Loan on the last
day of the then current Interest Period for such LIBOR Loan or (if outstanding
as Prime Rate Loans) will remain as, or (if not then outstanding) will be made
as Prime Rate Loans.

               3.7   Additional Costs.
                     ---------------- 

               (a)   The Borrowers shall pay to each Bank from time to time such
amounts as such Bank may reasonably determine to be necessary to compensate it
for any costs incurred by such Bank which such Bank determines are attributable
to its making or maintaining of any LIBOR Loans hereunder or its obligation to
make any of such Borrower Loans hereunder, or any reduction in any amount
receivable by such Bank hereunder in respect of any LIBOR Loan or such
obligation (such increases in costs and reductions in amounts receivable being
herein called "Additional Costs"), in each case resulting from any Regulatory
               ----------------                                              
Change which:

<PAGE>
 
                                      -6-

                        (1)  changes the basis of taxation of any amounts
               payable to such Bank under this Agreement or the Note or Notes
               held by such Bank in respect of any LIBOR Loan; or

                        (2)  imposes or modifies any reserve, special deposit or
               similar requirements relating to any extensions of credit or
               other assets of, or any deposits with or other liabilities of,
               such Bank (including any LIBOR Loan or any deposits referred to
               in the definition of "LIBOR Rate" below).

Each Bank will notify the Borrowers of any event occurring after the date of
this Agreement which will entitle such Bank to compensation pursuant to this
Section 3.7 as promptly as practicable after it obtains knowledge thereof and
determines to request such compensation.  Such Bank will furnish the Borrowers
with a statement, in reasonable detail, setting forth the basis and amount of
each request by such Bank for compensation under this Section 3.7.

               (b)  Without limiting the effect of the foregoing provisions of
this Section 3.7 in the event that, by reason of any Regulatory Change, any Bank
either (i) incurs Additional Costs based on or measured by the excess above a
specified level of the amount of a category of deposits or other liabilities of
such Bank which includes deposits by reference to which the interest rate on
LIBOR Loans is determined as provided in this Agreement or a category of
extensions of credit or other assets of such Bank which includes LIBOR Loans or
(ii) becomes subject to restrictions on the amount of such a category of
liabilities or assets which it may hold, then, if such Bank so elects by notice
to the Borrowers, the obligation of such Bank to make LIBOR Loans hereunder
shall be suspended until the date such Regulatory Change ceases to be in effect.

               (c)  Determinations and allocations by any Bank for purposes of
this Section 3.7 of the effect of any Regulatory Change on its costs of
maintaining its obligations to make LIBOR Loans or of making or maintaining
LIBOR Loans or on amounts receivable by it in respect of LIBOR Loans, and of the
additional amounts required to compensate such Bank in respect of any Additional
Costs, shall be conclusive absent manifest error, provided that such
determinations and allocations are made on a reasonable basis, and provided
further that in administering this Section each Bank shall not single out the
Borrowers for different treatment but shall deal with them on the same basis as
the Bank deals with its other customers generally.

               3.8   Limitation on Types of Loans.  Anything herein to the
                     ----------------------------
contrary notwithstanding, if, with respect to any LIBOR Loans, any Bank
determines (which determination shall be conclusive) that the relevant rates of
interest referred to in the definition of "LIBOR Rate" in Section 10.1 below
upon the basis of which the rates of interest for any LIBOR Loan are to be
determined do not accurately reflect the cost to such Bank of making or
maintaining such LIBOR Loans for the Interest Period therefor, then such Bank
shall promptly notify the Borrowers, and so long as such condition remains in
effect, such Bank shall be under no obligation to convert Prime Rate Loans into
LIBOR Loans and the Borrowers shall, on the last day(s) of the then current
Interest Period(s) for the outstanding LIBOR Loans, either prepay such LIBOR
Loans or convert such LIBOR Loans into Prime Rate Loans in accordance with
Section 3.13.

               3.9   Illegality.  Notwithstanding any other provision of this
                     ----------                                              
Agreement to the contrary, in the event that it becomes unlawful for any Bank to
(a) honor its obligation to make LIBOR Loans hereunder, or (b) maintain LIBOR
Loans (identifying the illegality in question in reasonable detail) hereunder,
then such Bank shall promptly notify the Borrowers and the other Bank thereof
and such Bank's obligation to make LIBOR Loans hereunder shall be suspended
until such time as such Bank may again make and maintain LIBOR Loans.

<PAGE>
 
                                      -7-

               3.10  Substitute Prime Rate Loans.  If the obligation of any Bank
                     ---------------------------
to make LIBOR Loans shall be suspended pursuant to Section 3.7, 3.8 or 3.9
hereof, all Borrower Loans which would otherwise be made by such Bank as LIBOR
Loans shall be made instead as Prime Rate Loans (and, if an event referred to in
Section 3.7(b) or 3.9 has occurred and such Bank so requests, by notice to the
Borrowers, each LIBOR Loan of such Bank then outstanding shall be automatically
converted into a Prime Rate Loan on the date specified by such Bank in such
notice) and, to the extent that LIBOR Loans are so made as (or converted into)
Prime Rate Loans, all payments of principal which would otherwise be applied to
such LIBOR Loans shall be applied instead to such Prime Rate Loans.

               3.11  Compensation.  If any payment, prepayment or conversion of
                     ------------         
a LIBOR Loan occurs on a date other than the last day of an Interest Period for
such Loan other than by reason of an error on the part of either Bank, the
Borrowers shall pay to any Bank, upon the request of such Bank, as compensation
for any loss, cost or expense incurred by such Bank as the result of such
payment, prepayment or conversion, an amount (if a positive number) equal to:


                       A  x  (B-C)  X    D
                                        ---
                                        360


       where:

       "A" equals the principal amount of the LIBOR Loan so paid, prepaid or
       converted (the "Affected LIBOR Loan");
                       -------------------   

       "B" equals the LIBOR Rate (expressed as a decimal) applicable to the
       Affected LIBOR Loan;

       "C" equals the applicable LIBOR Rate (expressed as a decimal) in effect
       on or about the date of such payment, prepayment or conversion, for
       deposits in an amount equal approximately to the principal amount of the
       Affected LIBOR Loan with an Interest Period (the "Remaining Interest
                                                         ------------------
       Period") beginning on the date of such payment, prepayment or conversion
       ------
       to but excluding the last day of the existing Interest Period; and

       "D" equals the number of days in the Remaining Interest Period;

       and any other out-of-pocket loss or expense (including any internal
       processing charge customarily charged by such Bank) suffered by such Bank
       in liquidating deposits prior to maturity in amounts which correspond to
       the principal amount of the Affected LIBOR Loan; provided that such Bank
                                                        --------               
       shall have delivered to the Borrowers a certificate, in reasonable
       detail, as to the amount of such loss and expense along with the basis
       for calculation thereof.

               3.12  Capital Adequacy.  If any Bank shall determine that the
                     ----------------                                       
applicability of any law, rule, regulation or guideline adopted pursuant to or
arising out of the July 1988 report of the Basle Committee on Banking
Regulations and Supervisory Practices entitled "International Convergence of
Capital Measurement and Capital Standards", or the adoption after the date
hereof of any other applicable law, rule, regulation or guideline regarding
capital adequacy, or any change in the foregoing or in the enforcement,
interpretation or administration thereof by any Governmental Authority charged
with the enforcement, interpretation or administration thereof, or compliance by
such Bank or any Person controlling such Bank (a "Parent") with any request or
                                                  ------                      
directive regarding capital adequacy (whether or not having the force of law) of
any such Governmental Authority, has

<PAGE>
 
                                      -8-

or would have the effect of reducing the rate of return on capital of such Bank
or its Parent as a consequence of such Bank's obligations hereunder to a level
below that which such Bank (or its Parent) could have achieved but for such
applicability, adoption, change or compliance (taking into consideration the
policies of such Bank (or its Parent) with respect to capital adequacy) by an
amount reasonably deemed by such Bank to be material, then from time to time,
within the second Business Day after demand by such Bank, the Borrowers shall
pay to such Bank such additional amount or amounts as will compensate such Bank
for such reduction in the rate of return, together with interest on each such
amount from the thirtieth day after such demand until payment in full thereof
(as well after as before judgement) at the Post-Default Rate.  A statement of
such Bank, in reasonable detail, claiming compensation under this Section 3.12
and setting forth the additional amount or amounts to be paid to it hereunder
shall be conclusive absent manifest error; provided that the determination
                                           --------                       
thereof is made on a reasonable basis and provided further that the Borrowers
                                          -------- -------                   
shall not be obligated to compensate any Bank for any such reduction occurring
more than 30 days prior to the time the Bank first notifies the Borrowers of
such adoption, implementation, charge or compliance, and provided further that
in administering this Section each Bank shall not single out the Borrowers for
different treatment but shall deal with them on the same basis as the Bank deals
with its other customers generally.  In determining such amount, such Bank may
use any reasonable averaging and attribution methods.

               3.13  Optional Prepayments.  Subject to the provisions of this
                     --------------------
Section 3.13, the Borrowers shall have the right to prepay the Borrower Loans in
whole or in part and to convert Borrower Loans of one Type into another Type,
without premium or penalty, at any time and from time to time, provided that (i)
at the time of the prepayment in full of all Working Capital Extensions of
Credit or Equipment Line of Credit Loans, as the case may be, the Borrowers
shall pay all interest accrued on the amount prepaid; (ii) the Borrowers shall
give the Bank or Banks in question notice of such prepayment as provided in
Section 3.6; (iii) the LIBOR Loans may be converted into Prime Rate Loans only
on the last day of an Interest Period thereof; and (iv) such Bank or Banks shall
be paid, at the time of any prepayment of a LIBOR Loan that is being prepaid on
other than the last day of an Interest Period therefor, the amount provided for
in Section 3.11. Principal amounts repaid or prepaid under the Borrower Notes or
under the Commitment may be reborrowed by the Borrowers subject to the terms
hereof; provided, however, in the case of the Working Capital Line of Credit
        --------  -------
Loans, that any funds repaid or prepaid on or after the earlier to occur of (a)
the Working Capital Commitment Expiration Date or (b) the termination of the
Total Working Capital Line Commitment pursuant to Section 1.7 hereof, may not be
reborrowed or readvanced thereafter, and provided further, however, in the case
                                         -------- -------- -------
of the Equipment Line of Credit Loans, that any funds repaid or prepaid may not
be reborrowed or readvanced thereafter.

       Section 4     Security and Guaranties.
       ---------     ----------------------- 

               4.1   Security Interests.  In order to secure payment and
                     ------------------ 
performance of the Borrower's obligations to the Banks under this Agreement, the
Borrower Notes and the other Loan Documents, (a) each Borrower agrees to grant
to SVB as collateral agent for the benefit of the Banks a security interest in,
and a lien on, all right, title and interest of such Borrower in and to certain
assets of such Borrower and to enter a security agreement in favor of SVB as
Collateral Agent in the form of Exhibit B-1 hereto in the case of Alpha and
                                -----------
Exhibit B-2 in the case of Trans-Tech (each a "Security Agreement") and (b) a
- -----------
pledge of all the outstanding shares of capital stock of the Guarantor referred
to below and to enter into a pledge agreement in favor of SVB as collateral
agent in the form of Exhibit C hereto (the "Pledge Agreement") .
                     ---------              ----------------   

               4.2   Guaranty.  The Borrower Loans shall be guaranteed by Alpha
                     --------                                                  
Securities Corp., a Massachusetts corporation, 20 Sylvan Road, Woburn, MA 01801,
(the "Guarantor").  The Guarantor shall execute and deliver to SVB as Collateral
      ---------                                                                 
Agent for the benefit of the Banks a

<PAGE>
 
                                      -9-

Guaranty in the form of Exhibit D hereto (the "Guarantee") and a Security
                        ---------              ---------                 
Agreement in the form of Exhibit E (the "Guarantor Security Agreement").
                         ---------       ----------------------------   

       Section 5     Conditions Precedent.
       ---------     -------------------- 

       The Banks shall not be obligated to make any of the Borrower Loans to the
Borrowers hereunder until the following conditions have been satisfied:

               5.1   This Agreement, the Borrower Notes and the Security
                     ---------------------------------------------------
Instruments. This Agreement, the borrowings hereunder, the Borrower Notes, the
- -----------
Security Instruments and all transactions contemplated by this Agreement and the
Security Instruments shall have been duly authorized by the Borrowers. The
Borrowers shall have duly executed and delivered to the Banks this Agreement,
the Borrower Notes and the Security Instruments to the Banks in form and
substance satisfactory to the Banks and their counsel. The Guarantor shall have
duly executed and delivered to the Banks its Guaranty.

               5.2   No Default.  On the date hereof and on the date of making
                     ----------
each Borrower Loan, no Default or Event of Default shall have occurred and be
continuing.

               5.3   Correctness of Representations.  On the date hereof and on
                     ------------------------------
the date of each Borrower Loan, all representations and warranties made by the
Borrowers in Section below or otherwise in writing in connection herewith shall
be true and correct with the same effect as though such representations and
warranties had been made on and as of today's date, except that representations
and warranties expressly limited to a certain date shall be true and correct as
of that date.

               5.4   Opinion of Counsel for the Borrowers.  On the date hereof,
                     ------------------------------------
the Banks shall have received the favorable opinion of Brown, Rudnick, Freed &
Gesmer, counsel for the Borrowers and the Guarantors, in form and substance
satisfactory to the Banks and their counsel.

               5.5   Governmental Approvals.  On the date hereof and on the date
                     ----------------------
of each Borrower Loan, all necessary approvals, licenses, permissions,
registrations or validations of any Governmental Authority required for the
execution, delivery, performance or carrying out of the provisions of this
Agreement, the Borrower Notes and the Security Instruments, or for the validity
or enforceability of the obligations incurred thereunder (other than the filing
of financing statements as required under Section below), shall have been
obtained and shall be in full force and effect and copies thereof certified by a
duly authorized officer of a Borrower to such effect shall have been delivered
to the Banks.

               5.6   Filing of Financing Statements, etc.  On or before the
                     -----------------------------------
making of the Borrower Loans, financing statements, and other appropriate
documentation relating to the security interests and rights granted pursuant to
the Security Instruments, executed and delivered by the Borrowers and by the
Guarantor to SVB as collateral agent for the Banks, shall have been duly
recorded or filed in such manner and in such places as is required by law
(including, pursuant to the UCC) to establish, preserve, protect, and perfect
such security interests and rights; and all taxes, fees and other charges in
connection with the execution, delivery and filing of this Agreement and such
financing statements and other appropriate documentation shall have been duly
paid.

               5.7   Supporting Documents.  On or before the date hereof, there
                     --------------------
shall have been delivered to the Banks the following supporting documents:

<PAGE>
 
                                     -10-

               (a)  legal existence and corporate good standing certificates
with respect to each of the Borrowers and the Guarantor dated as of a recent
date issued by the appropriate Secretaries of State or other officials;

               (b)  certificates with respect to the due qualification of Alpha
and the Guarantor to do business in Massachusetts dated as of a recent date and
issued by the Secretary of State of such jurisdiction;

               (c)  copies of the corporate charter of each of the Borrowers
and the Guarantor, certified by the appropriate Secretaries of State or other
officials, as in effect on the date hereof;

               (d)  a certificate of the Secretary or Assistant Secretary of
each of the Borrowers certifying as to (i) the By-Laws of such Borrower, as in
effect on the date hereof; (ii) the incumbency and signatures of the officers of
such Borrower who have executed any documents in connection with the
transactions contemplated by this Agreement; and (iii) the resolutions of the
Board of Directors and, to the extent required by law, the shareholders, of such
Borrower authorizing the execution, delivery and performance of this Agreement
and the making of any of the Borrower Loans hereunder, and the execution and
delivery of the Borrower Notes;

               (e)  a certificate of the Secretary or Assistant Secretary of
the Guarantor certifying as to (i) the By-Laws of the Guarantor, as in effect on
the date hereof; (ii) the incumbency and signatures of the officers of the
Guarantor who have executed any documents in connection with the transactions
contemplated by this Agreement; and (iii) the resolutions of the Board of
Directors and, to the extent required by law, the shareholders, of the Guarantor
authorizing the execution, delivery and performance of the Guaranty and
Guarantor Security Agreement;

               (f)  all other information and documents which the Banks or
their counsel may request in connection with the transactions contemplated by
this Agreement.

               5.8   Facility Fees.  The Borrowers shall have paid to Fleet a 
                     -------------
non-refundable Facility Fee in the amount of $25,000 in connection with the
Equipment Line Commitment. In respect of the Working Capital Line Commitments,
the Borrowers shall pay to each Bank quarterly in arrears on the last day of
each calendar quarter a Facility Fee equal to one-half percent ( 1/2%) per annum
of such Bank's Working Capital Line Commitment, provided, however, in the event
                                                --------  -------              
that the Borrowers request termination of the Total Working Capital Line
Commitment, the payment of the unpaid portion of the Facility Fee for the period
through the Working Capital Commitment Expiration Date shall be accelerated and
shall be immediately payable in full in accordance with Section 1.7.

               5.9   Compliance and Borrowing Base Certificates.  Each of the
                     ------------------------------------------              
Borrowers shall have furnished to the Banks a Compliance Certificate in the form
of attached Exhibit F appropriately completed and signed by the chief financial
            ---------                                                          
officer of each of the Borrowers, and to the extent the Borrowers are requesting
a Working Capital Extension of Credit on the date hereof, a Borrowing Base
Certificate in the form of Exhibit G hereto appropriately completed and signed
                           ---------                                          
by the chief financial officer or president of the Borrower, each of which
certificates shall reflect compliance by the Borrowers with the requirements of
this Credit Agreement.

               5.10  Legal Matters.  All documents and legal matters incident to
                     -------------
the transactions contemplated by this Agreement shall be satisfactory to
Sullivan & Worcester, special counsel for the Banks.

<PAGE>
 
                                     -11-

       Each borrowing hereunder shall constitute a representation and warranty
by the Borrowers to the Banks that all of the conditions specified in this
Section have been complied with as of the time of any such Borrower Loan.

       Section 6     Representations and Warranties.
       ---------     ------------------------------ 

       In order to induce the Banks to enter into this Agreement and to make the
contemplated Extensions of Credit, the Borrowers hereby represent and warrant as
follows (except to the extent qualified by supplemental disclosure set forth on
Schedule A hereto) and the following representations and warranties as so
- ----------                                                               
qualified shall survive the execution and delivery of this Agreement and any of
the Borrower Loans:

               6.1   Corporate Status.  Each of the Borrowers and each of their
                     ----------------                                          
respective Subsidiaries is a duly organized and validly existing corporation in
good standing under the laws of the jurisdiction of its incorporation and is
duly qualified or licensed as a foreign corporation in good standing in each
jurisdiction in which the failure to do so would have a Material Adverse Effect.

               6.2   No Violation.  Neither the execution, delivery or
                     ------------
performance of this Agreement or any other Loan Document, nor consummation of
the contemplated transactions will contravene any law, statute, rule or
regulation to which either of the Borrowers or any of their Subsidiaries is
subject or any judgment, decree, franchise, order or permit applicable to either
of the Borrowers or any of their Subsidiaries, or will conflict or be
inconsistent with or will result in any breach of, or constitute a default
under, or result in or require the creation or imposition of any Lien (other
than the lien created by the Security Instruments) upon any of the property or
assets of either of the Borrowers or any of their Subsidiaries pursuant to, any
Contractual Obligation of the Borrowers or any of their Subsidiaries, or violate
any provision of the corporate charter or by-laws of either of the Borrowers or
any of their Subsidiaries.

               6.3   Corporate Power and Authority.  The execution, delivery and
                     -----------------------------                              
performance of this Agreement and the other Loan Documents are within the
corporate powers of each of the Borrowers and have been duly authorized by all
necessary corporate action.

               6.4   Enforceability.  This Agreement and each other Loan
                     --------------
Document constitutes a valid and binding obligation of each of the Borrowers
enforceable against each Borrower in accordance with its terms, except as be
limited by applicable bankruptcy, insolvency, reorganization, moratorium or
similar laws affecting the enforcement of creditors' rights generally and
subject to general principles of equity, whether applied in a court of equity or
at law.

               6.5   Governmental Approvals.  No order, permission, consent,
                     ----------------------
approval, license, authorization, registration or validation of, or filing with,
or exemption by, any Governmental Authority is required to authorize, or is
required in connection with, the execution, delivery and performance of this
Agreement or any other Loan Document by the Borrowers, or the taking of any
action contemplated hereby or thereby, except for the filing of UCC-1 financing
statements in the appropriate UCC filing offices listed on the Perfection
Certificate (as defined in the Security Agreement).

               6.6   Financial Statements.  (a)  The Borrowers have furnished
                     --------------------
the Banks with complete and correct copies of the audited consolidated balance
sheet of the Borrowers and their Subsidiaries as of the Financial Statements
Date, and the related audited consolidated statements of income and of cash
flows for the fiscal year of the Borrowers and their Subsidiaries ended on such
date, examined by the Accountants. Such financial statements (including the
related schedules and notes) fairly present the consolidated financial condition
of the Borrowers and their Subsidiaries as

<PAGE>
 
                                      -12-

of the Financial Statements Date, and the consolidated results of their
operations and their consolidated cash flows for the fiscal year then ended.

               (b)   During the period from the Financial Statements Date to the
date hereof: (i) there has been no sale, transfer or other disposition by the
Borrowers or any of their Subsidiaries of any material part of its business or
property and no purchase or other acquisition of any business or property
(including any capital stock of any Person) material in relation to the
consolidated financial condition of the Borrowers and their Subsidiaries at the
Financial Statements Date; and (ii) neither the Borrowers nor any of their
Subsidiaries has made a Restricted Payment, or agreed or committed to make a
Restricted Payment.

               (c)   All the above-referenced financial statements (including
the related schedules and notes) have been prepared in accordance with GAAP
applied consistently throughout the periods involved (except as approved by the
Accountants and disclosed therein and, in the case of interim financial
statements, subject to normal year-end adjustments and the absence of footnotes
and schedules). Neither Borrower nor any of their respective Subsidiaries has
any material liabilities, contingent or otherwise, including liabilities for
taxes or any unusual forward or long-term commitments or any Guarantee, which
are not disclosed by or included in the above-referenced financial statements or
the accompanying notes and there are no unrealized or anticipated losses from
any unfavorable commitments of the Borrowers or any of their Subsidiaries which
may have a Material Adverse Effect.

               6.7   No Material Change.  Since the Financial Statements Date
                     ------------------     
there has been no development or event, nor to the best knowledge of the
Borrowers, any prospective development or event, which has had or could have a
Material Adverse Effect.

               6.8   Litigation.  There are no actions, suits or proceedings
                     ----------   
pending or threatened against or affecting either of the Borrowers or any of
their Subsidiaries before any Governmental Authority, which in any one case or
in the aggregate, if determined adversely to the interests of either Borrower or
any Subsidiary thereof, would have a Material Adverse Effect.

               6.9   Compliance with Other Instruments; Compliance with Law. 
                     ------------------------------------------------------
Neither Borrower nor any Subsidiary thereof is in default under any Contractual
Obligation, where such default could have a Material Adverse Effect. Neither
Borrower nor any Subsidiary thereof is in default and or in violation of any
applicable statute, rule, writ, injunction, decree, order or regulation of any
Governmental Authority having jurisdiction over the Borrower or any Subsidiary
thereof which default or violation could have a Material Adverse Effect,
provided that nothing herein shall prevent the Borrower from contesting in good
faith any alleged default or violation by appropriate proceedings diligently
conducted where adequate reserves have been established in accordance with GAAP.

               6.10  Subsidiaries.  The Borrowers have no Subsidiaries except as
                     ------------
set forth on attached Schedule A.
                      ---------- 

               6.11  Investment Borrower Status; Limits on Ability to Incur
                     ------------------------------------------------------    
Indebtedness.  Neither Borrower nor any of their Subsidiaries is an "investment
- ------------
company" or a company "controlled by" an investment company within the meaning
of the Investment Company Act of 1940, as amended. Neither Borrower is subject
to regulation under any Federal or State statute or regulation which limits its
ability to incur Indebtedness.

               6.12  Title to Property.  Each of the Borrowers and each of their
                     -----------------     
Subsidiaries has good and marketable title to all of its properties and assets,
including the properties and assets

<PAGE>
 
                                      -13-

reflected in the consolidated balance sheet of the Borrowers and their
Subsidiaries as of the Financial Statements Date, except as disclosed on
Schedule A and except such as have been disposed of since that date in the
- ----------                                                         
ordinary course of business, and none of such properties or assets is subject to
any Lien except for (a) Permitted Liens, or (b) a defect in title or other claim
other than defects and claims that, in the aggregate, would have no Material
Adverse Effect. Each of the Borrowers and each of their Subsidiaries enjoys
peaceful and undisturbed possession under all leases necessary in any material
respect for the operation of its properties and assets, none of which contains
any unusual or burdensome provisions which might materially affect or impair
such properties or assets. All such leases are valid and subsisting and are in
full force and effect.

               6.13  ERISA.  Each of the Borrowers and each member of the
                     -----
Controlled Group have fulfilled their obligations under the minimum funding
standards of ERISA and the Code with respect to each Plan and are in compliance
in all material respects with the presently applicable provisions of ERISA and
the Code, and have not incurred any liability to the PBGC or a Plan under Title
IV of ERISA (other than to make contributions or premium payments in the
ordinary course).

               6.14  Taxes.  All tax returns of the Borrowers and their
                     -----
Subsidiaries required to be filed have been timely filed, all taxes, fees and
other governmental charges (other than those being contested in good faith by
appropriate proceedings diligently conducted and with respect to which adequate
reserves have been established) and, in the case of ad valorem taxes or
                                                    -- -------
betterment assessments, no proceedings to foreclose any lien with respect
thereto have been commenced and, in all other cases, no notice of lien has been
filed or other action taken to perfect or enforce such lien) shown thereon which
are payable have been paid. The charges and reserves on the books of the
Borrower and their Subsidiaries for all income and other taxes are adequate, and
the Borrower knows of no additional assessment or any basis therefor. The
Federal income tax returns of the Borrowers and their Subsidiaries have not been
audited within the last three years, all prior audits have been closed, and
there are no unpaid assessments, penalties or other charges arising from such
prior audits.

               6.15  Environmental Matters. (a) Each of the Borrowers and each
                     ---------------------
of their Subsidiaries have obtained all Governmental Approvals that are required
for the operation of its business under any Environmental Law, except where the
failure to so obtain a Governmental Approval would not have a Material Adverse
Effect.

               (b)  Each of the Borrowers and each of their Subsidiaries are in
compliance with all terms and conditions of all required Governmental Approvals
and are also in compliance with all terms and conditions of all applicable
Environmental Laws, noncompliance with which would have a Material Adverse
Effect.

               (c)  Except as disclosed in Schedule A, there is no civil,
                                           ----------
criminal or administrative action, suit, demand, claim, hearing, notice of
violation, investigation, proceeding, notice or demand letter pending or, to the
best knowledge of the Borrowers threatened against the Borrowers or any
Subsidiary thereof relating in any way to the Environmental Laws, and there is
no Lien of any private entity or Governmental Authority against any property of
the Borrowers or any Subsidiary thereof relating in any way to the Environmental
Laws.

               (d)  There has been no claim, complaint, notice, or request for
information received by the Borrowers with respect to any site listed on the
National Priority List promulgated pursuant to the Comprehensive Environmental
Response, Compensation, and Liability Act ("CERCLA") 42 USC (S) 9601 et seq. or
                                            ------                   -- ----
any state list of sites requiring investigation or cleanup with respect to
contamination by Hazardous Substances.

<PAGE>
 
                                      -14-

               (e) To the best of the Borrowers' knowledge, there has been no
release or threat of release of any Hazardous Substance at any Borrower Property
which would likely result in liability being imposed upon either of the
Borrowers or any Subsidiary thereof, which liability would have a Material
Adverse Effect.

               6.16  Intellectual Property.  Schedule A lists all of the
                     ---------------------   ---------- 
copyrights, patents, trademarks and similar rights ("Intellectual Property")
                                                     ---------------------
owned by each of the Borrowers and their Subsidiaries as of the date hereof,
together with information, where applicable, as to registration number, filing
date, record owner and remaining life. Except as set forth in Schedule A, one of
                                                              ----------
the Borrowers or a Subsidiary thereof is the absolute owner of all right, title
and interest in the Intellectual Property, free and clear of all Liens in favor
of other Persons with full right to pledge, sell, assign, transfer and grant a
security interest therein. Each of the Borrowers and each of their Subsidiaries
owns or possesses such Intellectual Property and similar rights necessary for
the conduct of its business as now conducted, without any known conflict with
the rights of others which would have a Material Adverse Effect.

               6.17  Working Capital Borrowing Base.  Giving effect to any
                     ------------------------------
Working Capital Extensions of Credit to be made as of the date hereof under this
Agreement, the aggregate amount of all Working Capital Extensions of Credit
under this Agreement does not exceed the Working Capital Borrowing Base on the
date hereof.

       Section 7     Affirmative Covenants.
       ---------     --------------------- 

       The Borrowers covenant and agree that for so long as this Agreement is in
effect and until the Borrower Notes, together with all interest thereon and all
other Obligations of the Borrowers to the Banks are paid or satisfied in full:

               7.1   Maintenance of Existence.  Except as disclosed on Schedule
                     ------------------------                          --------
A, each of the Borrowers will, and will cause each of their Subsidiaries to,
- -
maintain its existence and comply with all applicable statutes, rules and
regulations and to remain duly qualified as a foreign corporation, licensed and
in good standing in each jurisdiction where such qualification or licensing is
required by the nature of its business, the character and location of its
property, business, or the ownership or leasing of its property, except where
such noncompliance or failure to so qualify would not have a Material Adverse
Effect, and the Borrowers will, and will cause each of their Subsidiaries to,
maintain its properties in good operating condition, and continue to engage in
the same business as presently conducted or businesses reasonably related or
complementary thereto.

               7.2   Taxes and Other Liens.  Each of the Borrowers will, and
                     ---------------------
will cause each of their Subsidiaries to, pay when due all taxes, assessments,
governmental charges or levies, or claims for labor, supplies, rent and other
obligations made against it which, if unpaid, might become a Lien against either
Borrower or such Subsidiary or on its property, except liabilities being
contested in good faith and by proper proceedings, as to which adequate reserves
are maintained on the books of the Borrowers or their Subsidiaries, in
accordance with GAAP.

               7.3   Insurance.  Each of the Borrowers will, and will cause each
                     ---------
of their Subsidiaries to, maintain insurance with financially sound and
reputable insurance companies in such amounts and against such risks as is
usually carried by owners of similar businesses and properties in the same
general areas in which the Borrowers and their Subsidiaries operate, provided
that in any event the Borrowers and their Subsidiaries shall maintain or cause
to be maintained (a) insurance against casualty, loss or damage covering all
property and improvements of the Borrowers and their Subsidiaries in amounts and
in respect of perils usually carried by owners of similar businesses and
properties in the same general areas in which the Borrowers and their

<PAGE>
 
                                      -15-

Subsidiaries operate; (b) comprehensive general liability insurance against
claims for bodily injury, death or property damage; and (c) workers'
compensation insurance to the extent required by applicable law. In the case of
policies referenced in clauses (a) and (b) above, all such insurance shall (i)
name the Borrowers and the Banks as loss payees and additional insureds as their
interests may appear; (ii) provide that no termination, cancellation or material
reduction in the amount or material modification to the extent of coverage shall
be effective until at least 30 days after receipt by the Banks of notice
thereof; and (iii) be reasonably satisfactory in all other respects to the
Banks, provided that as long as no Event of Default has occurred or is
continuing and no casualty could reasonably be expected to have a Material
Adverse Effect, the Borrowers shall have the right to use any insurance proceeds
to repair or replace damaged or lost equipment or property.

               7.4   Financial Statements, Etc.  The Borrowers will furnish to
                     -------------------------
the Banks:

               (a)   within thirty (30) days after the end of each fiscal month
of the Borrowers, the unaudited consolidated and consolidating balance sheet and
income statement and statement of cash flows of the Borrowers, together with
their Subsidiaries as at and for the one-month period ended on the last day of
such fiscal month, accompanied by a certificate of the chief financial officer
of Alpha to the effect that such financial statements fairly present the
consolidated financial condition of the Borrowers and their Subsidiaries as of
the end of such fiscal month, and the consolidated results of their operations
and their consolidated cash flows for such fiscal month, in each case in
accordance with GAAP (except for the absence of footnotes) consistently applied
(subject to normal year-end audit adjustments), provided, however, in the event
                                                --------- -------              
that at any time the Borrowers cease to prepare month-end financial statements
as described above in the normal course of their operations, the Borrowers shall
within the period prescribed above supply the Banks the substitute financial
information, the form of which has been approved in advance by both the Banks;

               (b)   within forty-five (45) days after the end of each fiscal
quarter of the Borrowers, the unaudited consolidated and consolidating balance
sheet and income statement and statement of cash flows of the Borrowers,
together with their Subsidiaries as at and for the three-month period ended on
the last day of such fiscal quarter, accompanied by a certificate of the chief
financial officer of Alpha to the effect that such financial statements fairly
present the consolidated financial condition of the Borrowers and their
Subsidiaries as of the end of such fiscal quarter, and the consolidated results
of their operations and their consolidated cash flows for such fiscal quarter,
in each case in accordance with GAAP (except for the absence of footnotes)
consistently applied (subject to normal year-end audit adjustments);

               (c)  within ninety (90) days after the last day of each fiscal
year of the Borrowers, the audited consolidated balance sheet and income
statement and statement of cash flows of the Borrowers and their Subsidiaries as
at and for the fiscal year then ended, certified by the Accountants (the
substance of such report to be satisfactory to the Banks), together with a
certificate of the chief financial officer of Alpha to the effect that such
financial statements fairly present the consolidated financial condition of the
Borrowers and their Subsidiaries as of the end of such fiscal year, and the
consolidated results of their operations for such fiscal year, in each case in
accordance with GAAP. The Borrowers shall indicate on said financial statements
all guarantees or unusual forward or long-term commitments made by the Borrowers
or any Subsidiary thereof;

               (d)  at the time of the delivery of the quarterly and yearly
financial statements required by Sections 7.4(a), (b) and (c) above, a
Compliance Certificate signed by the chief financial officer or the president of
Alpha in the form attached to this Agreement as Exhibit F, appropriately
                                                ---------
completed;

<PAGE>
 
                                      -16-


               (e)  within thirty (30) days after the end of each fiscal month
of the Borrowers, (i) a list of the trade accounts receivable aging for each of
the Borrowers as of the end of such month in such form as the Banks may
prescribe, all in reasonable detail and (ii) a Borrowing Base Certificate signed
by the chief financial officer or the president of each of the Borrowers in the
form attached to this Agreement as Exhibit G appropriately completed;
                                   ---------                         

               (f)  promptly upon the mailing thereof to the shareholders of the
Borrowers generally, copies of all financial statements, reports, proxy
statements and other materials;

               (g)  promptly upon request by any Bank, copies of any management
letter provided by the Accountants;

               (h)  promptly upon the filing thereof by a Borrower with the SEC
(and in any event within five (5) days of such filing), copies of any
registration statements and reports on Forms 10-K, 10-Q and 8-K (or their
equivalents if such forms no longer exist);

               (i)  promptly upon becoming aware of any litigation or other
proceeding against any Borrower or any Subsidiary thereof that may have a
Material Adverse Effect, notice thereof; and

               (j)  promptly following the request of any Bank, such further
information concerning the business, affairs and financial condition or
operations of the Borrower and their Subsidiaries as such Bank may reasonably
request.

               7.5   Notice of Default.  As soon as practicable, and in any
                     ----------------- 
event, within five (5) Banking Days of becoming aware of the existence of any
condition or event which constitutes a Default, the Borrowers will provide each
Bank with written notice specifying the nature and period of existence thereof
and what action the Borrowers is taking or proposes to take with respect
thereto.

               7.6   Environmental Matters.
                     --------------------- 

               (a)  Each of the Borrowers and each of their Subsidiaries shall
comply with all terms and conditions of all applicable Governmental Approvals
and all applicable Environmental Laws, except where failure to comply could
reasonably be anticipated not to have a Material Adverse Effect.

               (b)  The Borrowers shall promptly notify the Banks in the event
that any executive officer of either Borrower or any employee of the Borrowers
primarily responsible for compliance with Environmental Laws becomes aware of:

               (i)  any spill, release, or threat of release of any Hazardous
       Substance at or from any Borrower Property or by any Person for whose
       conduct either Borrowers or any Subsidiary thereof is responsible, to the
       extent such Borrowers is required by Environmental Laws to report such to
       any Governmental Authority;

               (ii)  any action or notice with respect to a civil, criminal or
       administrative action, suit, demand, claim, hearing, notice of violation,
       investigation, proceeding, notice or demand letter pending or threatened
       against either Borrower or any Subsidiary thereof relating in any way to
       the Environmental Laws, or any Lien of any Governmental Authority or any
       other Person against any Borrower Property relating in any way to the
       Environmental Laws;

<PAGE>
 
                                      -17-

               (iii)  any claim made or threatened by any Person against either
       Borrower or any Subsidiary thereof or any property of either Borrower or
       any Subsidiary thereof relating to damage, contribution, cost recovery
       compensation, loss or injury resulting from any Hazardous Substance
       pertaining to such property or the business or operations of either
       Borrower or such Subsidiary; and

               (iv)  any occurrence or condition on any real property adjoining
       or in the vicinity of any Borrower Property known to the officers or
       supervisory personnel of either Borrower or any Subsidiary thereof or
       other employees having responsibility for the compliance by either
       Borrower or any Subsidiary thereof with Environmental Laws, without any
       independent investigation, which does cause, or could cause, such
       Borrower Property, or any part thereof, to contain Hazardous Substances
       in violation of any Environmental Laws, or which does cause, or could
       cause, such Borrower Property to be subject to any restrictions on the
       ownership, occupancy, transferability or use thereof by either Borrower
       or any Subsidiary thereof.

               (c)  Each Borrower will, and will cause each of their
Subsidiaries to, at its own cost and expense, and within such period as may be
required by applicable law or regulation, initiate all remedial actions and
thereafter diligently prosecute such action as shall be required by law for the
cleanup of such Borrower Property, including all removal, containment and
remedial actions in accordance with all applicable Environmental Laws and shall
further pay or cause to be paid, at no expense to the Banks, all cleanup,
administrative, and enforcement costs of applicable Government Authorities which
may be asserted against such Borrower Property.

               7.7   ERISA Information.  If and when either Borrower or any
                     -----------------
member of the Controlled Group (a) gives or is required to give notice to the
PBGC of any "reportable event" (as defined in Section 4043 of ERISA) with
respect to any Plan which might constitute grounds for a termination of such
Plan under Title IV of ERISA, or knows that the plan administrator of any Plan
has given or is required to give notice of any such reportable event, (b)
receives notice of complete or partial withdrawal liability under Title IV of
ERISA or (c) receives notice from the PBGC under Title IV of ERISA of an intent
to terminate or appoint a trustee to administer the Plan, the Borrowers shall in
each such instance promptly furnish to the Banks a copy of any such notice.

               7.8   Inspection.  Each Borrower will, upon the request of the
                     ----------
Banks, permit a representative of the Banks (including any field examiner or
auditor retained by the Banks) to inspect and make copies of the Borrowers'
books and records, and to discuss its affairs, finances and accounts with its
officers and accountants, at such reasonable times and as often as the Banks may
reasonably request and cause each of their Subsidiaries to do so. Each Borrower
agrees that an accounts receivable audit shall be conducted on or before August
31, 1995 and on an annual basis thereafter. Each Bank will maintain the
confidentiality of any non-public information relating to the Borrowers and
their Subsidiaries which has been identified in writing as confidential on the
information itself or otherwise (the "Confidential Information") and, except as
provided below, will exercise the same degree of care that such Bank exercises
with respect to its own proprietary information to prevent the unauthorized
disclosure of the Confidential Information to third parties. Confidential
Information shall not include data or information that either: (a) is in or
becomes part of the public domain or is already in the knowledge or possession
of such Bank when disclosed to such Bank, without breach of this Agreement; or
(b) is disclosed to such Bank by a third party, provided such Bank does not have
actual knowledge that such third party is prohibited from disclosing such
information. The terms of this Section shall not apply to disclosure of
Confidential Information by either Bank that is, in the good faith opinion of
such Bank, compelled by laws, regulations, rules, orders or legal process or
proceedings or is disclosed to: (a) any party, including a prospective
participant, who has signed a confidentiality agreement containing terms
substantially 

<PAGE>
 
                                      -18-

similar to those contained herein; and (b) examiners, auditors and investigators
having regulatory authority over such Bank.

               7.9   Use of Proceeds.  The Borrowers shall use the proceeds of
                     ---------------
the borrowings under the Working Capital Note for the working capital purposes
of the Borrowers. The Borrowers shall use the proceeds of the borrowings under
the Equipment Line Note exclusively for financing the acquisition of Eligible
Equipment. Without limiting the foregoing, no part of such proceeds will be used
for the purpose of purchasing or carrying any "margin security" as such term is
defined in Regulation U of the Board of Governors of the Federal Reserve System.

               7.10  Further Assurances.  Each Borrower will, and will cause
                     ------------------
each of their Subsidiaries to, execute and deliver to the Banks any writings and
do all things necessary, effectual or reasonably requested by the Banks to carry
into effect the provisions and intent of this Agreement or any other Loan
Document.

               7.11  Subsidiaries.  Each Borrower shall immediately notify each
                     ------------
Bank of the organization of any additional foreign or domestic Subsidiaries of
the Borrowers. The Banks may require that any Subsidiaries become parties to any
of the Loan Documents as guarantors or sureties and/or that the Borrowers pledge
the stock of any Subsidiaries as collateral for the Obligations of the
Borrowers.

               7.12  Intellectual Property.  The Borrowers will promptly inform
                     --------------------- 
the Banks of all applications filed by the Borrowers for trademarks, patents and
copyrights and of all trademarks, patents and copyrights granted on or after the
date of this Agreement.

       Section 8     Negative Covenants.
       ---------     ------------------ 

       Each of the Borrowers covenants and agrees that for so long as this
Agreement is in effect and until the Borrower Notes, together with all interest
thereon and all other Obligations of the Borrower to the Banks are paid or
satisfied in full, without the prior written consent of all the Banks:

               8.1   ERISA.  The Borrowers will not permit any pension plan
                     -----
maintained by either Borrower or by any member of a "Controlled Group" (ERISA
(S)210(c) or ERISA (S)210(d)) of which either Borrower is a member to: (a)
engage in any "prohibited transaction" (ERISA (S)2003(c)); (b) fail to report to
the Banks a "reportable event" (ERISA (S)4043) within 30 days after its
occurrence or as to any reportable event as to which the 30-day notice period
requirement of Section 4043(b) of Title IV of ERISA has been waived by the PBGC,
within 30 days of such time as the Borrower is requested to notify the PBGC of
such reportable event; (c) incur any "accumulated funding deficiency" (ERISA
(S)302); (d) terminate its existence at any time in a manner which could result
in the imposition of a Lien on the property of the Borrower or any Subsidiary
thereof; or (e) fail to report to the Banks any "complete withdrawal" or
"partial withdrawal" by the Borrower or an affiliate from a "multiemployer plan"
(ERISA (S)(S)4203, 4205, and 4001, respectively). The quoted terms are defined
in the respective sections of ERISA cited above.

               8.2   Transactions with Affiliates.  Subject to the provisions of
                     ---------------------------- 
Section 8.8, neither Borrower will and nor permit any of their Subsidiaries to,
directly or indirectly, pay any funds to or for the account of, make any
Investment in, lease, sell, transfer or otherwise dispose of any assets,
tangible or intangible, or engage in any transaction in connection with any
joint enterprise or other joint arrangement with, any Affiliate of the
Borrowers, unless such transaction is otherwise permitted under this Agreement,
is in the ordinary course of the Borrowers' or such Subsidiary's business, and
is (a) in the case of any transaction, between any Borrower and its Subsidiaries
or between the Subsidiaries, is duly accounted for in accordance with GAAP, and
(b) in the case of 

<PAGE>
 
                                      -19-

transactions with other Affiliates, is upon fair and
reasonable terms no less favorable to such Borrower or such Subsidiary as those
that could be obtained in a comparable arm's length transaction with a Person
which is not an Affiliate but is a significant and valued customer.

               8.3   Consolidation, Merger or Acquisition.  Neither Borrower
                     ------------------------------------
will and nor permit any of their Subsidiaries to, merge or consolidate with or
into any other Person, or make any acquisition of the business of any other
Person unless it obtains the prior written consent of the Banks; provided that
                                                                 -------- 
any Subsidiary may merge into a Borrower or any wholly-owned Subsidiary of a
Borrower, and provided, further that either Borrower and their Subsidiaries may
              --------  -------  
make an acquisition or effectuate a merger with another Person as long as (a) no
Event of Default has arisen during the four fiscal quarters immediately
preceding any such transaction; (b) no Event of Default would arise as a result
of such transaction or is otherwise reasonably expected to occur during the four
fiscal quarters immediately following such transaction and the Borrowers
furnishes to the Banks in advance of such transaction pro forma financial
                                                      --- -----
information reasonably demonstrating the foregoing; (c) the other Person is
engaged in the same or a related line of business; (d) there is no change in the
senior management of the Borrowers; (e) in the case of any merger, the Borrowers
or its Subsidiary is the surviving entity; and (f) the aggregate value of
consideration paid by the Borrowers and their Subsidiaries in connection with
such transactions in any fiscal year does not exceed (i) in the event that the
Borrower's Tangible Net Worth is less than $32,500,000 immediately preceding
such a transaction, $5,000,000; and (ii) in the event that the Borrower's
Tangible Net Worth immediately preceding such a transaction is $32,500,000 or
greater, $10,000,000.

               8.4   Disposition of Assets.  Neither Borrower will nor permit
                     ---------------------
any of their Subsidiaries to, convey, sell, lease, transfer or otherwise dispose
of any of its property, business or assets (including, without limitation,
accounts receivable and leasehold assets), whether now owned or hereafter
acquired, except:

               (a)  excess, obsolete or worn out property disposed of in the
       ordinary course of business;

               (b)  the sale or other disposition of any property in the
       ordinary course of business, provided that the aggregate book value 
                                    --------
       of all assets (other than inventory) so sold or disposed of in any period
       of twelve consecutive months shall not exceed 5% of the consolidated
       total assets of the Borrowers and their Subsidiaries as at the beginning
       of such twelve-month period; and

               (c)  the sale of inventory in the ordinary course of business.

               8.5   Indebtedness. The Borrowers will not, and will not permit
                     ------------
any of their Subsidiaries to, create, incur, assume or suffer to exist any
Indebtedness, except:

               (a)  Indebtedness payable to the Banks in connection with this
       Credit Agreement;

               (b)  existing Indebtedness, including Subordinated Debt, if any,
       listed on Schedule A hereto;
                 ----------        

               (c)  Subordinated Debt incurred by either Borrower after the date
       hereof; provided that, giving effect to the incurrence of such
               -------- 
       Subordinated Debt and to the receipt and application of the proceeds
       thereof, no Default shall have occurred and be continuing; and

<PAGE>
 
                                      -20-

               (d)  Purchase Money Indebtedness and Capital Lease Obligations in
       an aggregate amount not in excess of $10,000,000 in any fiscal year.

               8.6   Liens.  The Borrowers will not, and will not permit any of
                     -----
their Subsidiaries to, create, incur, assume or suffer to exist any Lien on any
of its properties or assets, except the following (collectively, "Permitted
                                                                  --------- 
Liens"):
- -----

               (a)  Liens for taxes not delinquent or being contested in good
       faith and by proper proceedings, as to which adequate reserves are
       maintained on the books of the Borrowers or their Subsidiaries in
       accordance with GAAP;

               (b)  carriers', warehousemen's, mechanics', materialmen's or
       similar liens imposed by law incurred in the ordinary course of business
       in respect of obligations not overdue, or being contested in good faith
       and by proper proceedings and as to which adequate reserves with respect
       thereto are maintained on the books of the Borrowers and their
       Subsidiaries in accordance with GAAP;

               (c)  pledges or deposits in connection with workers'
       compensation, unemployment insurance and other types of social security
       legislation;

               (d)  security deposits made to secure the performance of leases,
       licenses and statutory obligations incurred in the ordinary course of
       business;

               (e)  Liens in favor of SVB as Collateral Agent for the Banks
       under the Loan Documents;

               (f)  existing Liens, if any, listed on Schedule A hereto;
                                                      ----------
       provided that no such Lien is spread to cover any additional property
       --------
       after the date hereof, and that the amount of the Indebtedness secured
       thereby is not increased;

               (g)  Purchase Money Security Interests securing Purchase Money
       Indebtedness permitted under Section 8.5(d) above;

               (h)  Liens with respect to Indebtedness secured by real property
       having a fair market value in excess of the Indebtedness so secured;
       
               (i)  Liens securing Indebtedness under Capital Lease Obligations
       permitted under Section 8.5(d); and

               (j)  Encumbrances on real property, such as easements, rights of
       way, and zoning restrictions, which do not individually or in the
       aggregate, materially interfere with the use of the property in the
       conduct of the Borrower's or a Subsidiary business.

               8.7   Restricted Payments.  The Borrowers will not, and will not
                     -------------------
permit any of their Subsidiaries to, declare or make any Restricted Payment,
provided that provided, however, Alpha may make cash expenditures in an
aggregate amount of up to $100,000 in any fiscal year in order to redeem shares
of capital stock of Alpha under the Borrower's [employee benefits plans].

               8.8  Investments.  The Borrowers will not, and will not permit
                    -----------
any of their Subsidiaries to, make, maintain or acquire any Investment in any
Person other than:

               (a)  marketable obligations issued or guaranteed by the United
       States of America;

<PAGE>
 
                                      -21-

               (b)  certificates of deposit, Eurodollar time deposits,
       commercial paper or any other obligations of (i) a Bank, (ii) any other
       bank or trust company organized or licensed to conduct a banking business
       under the laws of the United States or any State thereof and which has
       (or which is a Subsidiary of a bank holding company which has) publicly
       traded debt securities rated A or higher by Standard & Poor's Corporation
       or A-2 or higher by Moody's Investors Service, Inc. or (iii) the banking
       institutions listed on Schedule A hereto;
                              -----------------                   

               (c)  depositary accounts at the Banks or any banking institution
       meeting the requirements of subparagraph 8.8(b) above;

               (d)  stock or obligations issued to the Borrowers or any
       Subsidiary thereof in settlement of claims against others by reason of an
       event of bankruptcy or a composition or the readjustment of debt or a
       reorganization of any debtor of the Borrowers or such Subsidiary;

               (e)  commercial paper having the highest rating then given by
       Moody's Investors Services, Inc. or Standard & Poor's Corporation;

               (f)  repurchase obligations with a term of not more than seven
       days for underlying securities of the types described in subparagraph 8.8
       (b) above entered into with the Banks or any of the banks referred to in
       subparagraph 8.8(a) above;

               (g)  investments in publicly reported shares of so-called "money
       market" mutual funds investing in securities of the type listed above in
       subparagraphs (a), (b), (e) and (f);

               (h)  Investments by either Borrower in the Guarantor and
       Investments by the Guarantor in the Borrower;

               (i)  Investments by the Borrowers in their Subsidiaries other
       than the Guarantor; provided that the sum of (A) the aggregate amount of
                           --------    
       all Investments made after the date hereof by the Borrowers in their Non-
       Guarantor Subsidiaries and (B) the outstanding amount of any Indebtedness
       of any Non-Guarantor Subsidiary of the Borrowers that is Guaranteed
       pursuant to this subparagraph (i), may not exceed $500,000 at any time,
       provided, however, nothing in this Section 8.8 shall prohibit Investments
       by the non-Guarantor Subsidiaries in the Borrowers;

               (j)  existing joint ventures, partnerships or strategic alliances
       listed on Exhibit A and joint ventures, partnerships or strategic
                 ---------
       alliances formed hereafter and approved in writing in advance by the
       Banks;

               (k)  securities of a corporation or limited liability company
       engaged in a line of business complimentary to that of the Borrowers but
       not constituting a Subsidiary, provided such Investment is approved in
       advance in writing by the Banks, except for nominal holdings of the
       securities of competitors; and

               (l)  authorized loans to employees, sales representatives and
       vendors of the Borrowers and their Subsidiaries provided that the
       aggregate principal amount of such loans may not exceed $500,000 at any
       time.

               8.9   Sale and Leaseback.  Neither Borrower nor any of their
                     ------------------
Subsidiaries shall enter into any arrangement, directly or indirectly, whereby
it shall sell or transfer any property owned by it in order to lease such
property or lease other property that such Borrowers or any such 

<PAGE>
 
                                      -22-

Subsidiary intends to use for substantially the same purpose as the property
being sold or transferred.

               8.10  Additional Stock Issuance by Subsidiaries.  The Borrowers
                     -----------------------------------------
shall not permit any of their Subsidiaries to issue any additional shares of its
capital stock or other equity securities, any options therefor or any securities
convertible thereto other than to the Borrowers.

               8.11  Quick Ratio. The Borrowers will not permit the Quick Ratio
                     -----------
at the end of any quarter to be less than .75 to 1.

               8.12  Minimum Profitability. The Borrowers will not (a) incur Net
                     ---------------------
Losses in any two consecutive fiscal quarters, (b) incur Net Losses in any
fiscal quarter in excess of $500,000, and (c) will earn cumulative Net Income of
not less than $2,000,000 for any four consecutive fiscal quarters.

               8.13  Leverage.  The Borrowers will not permit the ratio of Total
                     --------
Senior Liabilities to Tangible Net Worth to be greater than 1.25 to 1 at the end
of any fiscal quarter.

               8.14  Tangible Net Worth.  The Borrowers will not permit the sum
                     ------------------
of Tangible Net Worth and the outstanding principal amount of Subordinated Debt
at the end of any fiscal quarter to be less than $25,000,000 plus (a) 50% of Net
Income earned in each fiscal quarter commencing with the fiscal quarter ending
April 2, 1995 (with no reduction or offset for Net Losses), and (b) 50% of any
increase in Stockholders' Equity and the outstanding principal amount of its
Subordinated Debt in accordance with GAAP resulting from the issuance of any
shares of capital stock or Subordinated Debt of the Borrowers or any of their
Subsidiaries after December 31, 1994.

               8.15  Cash Flow Coverage.  Commencing with the quarter ending
                     ------------------
March 31, 1996, the Borrowers will not permit the ratio of Operating Cash Flow
to Adjusted Fixed Charges measured as of the last day of any fiscal quarter for
the four consecutive fiscal quarters ending with such fiscal quarter to be less
than 1.25 to 1.

               8.16  Capital Expenditures.  Neither the Borrowers nor any of
                     --------------------
their Subsidiaries shall purchase or agree to purchase, or incur any obligations
(including that portion of the obligations arising under capital leases that is
required to be capitalized on the consolidated balance sheet of the Borrowers
and their Subsidiaries) for any equipment or other property constituting fixed
assets in any fiscal year in excess of $15,000,000.

       Section 9     Events of Default.
       ---------     ----------------- 

               9.1   Events of Default.  The occurrence of any of the following
                     -----------------
events shall be an "Event of Default" hereunder:

               (a)  The Borrowers (i) shall default in the due and punctual
       payment of principal or interest on any Borrower Note, or (ii) shall fail
       to make payment of any other amount due under any Loan Document within
       four (4) days of the date on which such amount is due or on which demand
       is made therefor; or

               (b)  Any representation, warranty or statement made herein or any
       other Loan Document, or in any certificate or statement furnished
       pursuant to or in connection herewith or therewith, shall prove to be
       incorrect, misleading or incomplete in any material respect on the date
       as of which made or deemed made; or

<PAGE>
 
                                      -23-

               (c)  The Borrowers shall default in the performance or observance
       of any term, covenant or agreement on their part to be performed or
       observed pursuant to Sections 8.3 and 8.11 through 8.16; or

               (d)  The Borrowers shall default in the performance or observance
       of any term, covenant or agreement on their part to be performed or
       observed pursuant to any of the provisions of this Agreement or any other
       Loan Document (other than those referred to in paragraphs 9.1(a) through
       9.1(c) above) and such default shall continue unremedied for a period of
       ten (10) days after the occurrence of such default; or

               (e)  Any obligation of the Borrowers or any Subsidiary thereof in
       an amount in excess of $250,000 in respect of any Indebtedness (other
       than the Borrowers Notes) or any Guarantee shall be declared to be or
       shall become due and payable prior to the stated maturity thereof, or
       such Indebtedness or Guarantee shall not be paid as and when the same
       becomes due and payable, or there shall occur and be continuing any
       default under any instrument, agreement or evidence of indebtedness
       relating to any such Indebtedness the effect of which is to permit the
       holder or holders of such instrument, agreement or evidence of
       indebtedness, or a trustee, agent or other representative on behalf of
       such holder or holders, to cause such Indebtedness to become due prior to
       its stated maturity; or

               (f)  The Borrowers or a Subsidiary thereof shall (i) apply for or
       consent to the appointment of, or the taking of possession by, a
       receiver, custodian, trustee or liquidator of itself or of all or a
       substantial part of its property, (ii) make a general assignment for the
       benefit of its creditors, (iii) commence a voluntary case under the
       Bankruptcy Code, (iv) file a petition seeking to take advantage of any
       other law relating to bankruptcy, insolvency, reorganization, winding-up,
       or composition or readjustment of debts, (v) fail to controvert in a
       timely and appropriate manner, or acquiesce in writing to, any petition
       filed against it in an involuntary case under the Bankruptcy Code, or
       (vi) take any corporate action for the purpose of effecting any of the
       foregoing; or

               (g)  A proceeding or case shall be commenced, without the
       application or consent of the Borrowers or any Subsidiary thereof in any
       court of competent jurisdiction, seeking (i) its liquidation,
       reorganization, dissolution or winding-up of either Borrower or any
       Subsidiary, or the composition or readjustment of its debts, (ii) the
       appointment of a trustee, receiver, custodian, liquidator or the like of
       either Borrower or any Subsidiary or of all or any substantial part of
       its assets, or (iii) similar relief in respect of either Borrower or any
       Subsidiary under any law relating to bankruptcy, insolvency,
       reorganization, winding-up, or composition or adjustment of debts, and
       such proceeding or case shall continue undismissed, or an order, judgment
       or decree approving or ordering any of the foregoing shall be entered and
       continue unstayed and in effect, for a period of 60 days; or an order for
       relief against either Borrower or any Subsidiary shall be entered in an
       involuntary case under the Bankruptcy Code; or

               (h)  A judgment or judgments for the payment of money in excess
       of $250,000 (net of insurance proceeds) in the aggregate shall be
       rendered against either Borrower or any Subsidiary thereof and any such
       judgment or judgments shall not have been vacated, discharged, stayed or
       bonded pending appeal within thirty (30) days from the entry thereof; or

               (i)  Either Borrower or any member of the Controlled Group shall
       fail to pay when due an amount or amounts aggregating in excess of
       $100,000 which it is obligated to pay to the PBGC or to a Plan under
       Title IV of ERISA; or a notice of intent to terminate a Plan or 

<PAGE>
 
                                      -24-

       Plans having aggregate Unfunded Liabilities in excess of $100,000 shall
       be filed under Title IV of ERISA by either Borrower or any member of the
       Controlled Group, any plan administrator or any combination of the
       foregoing; or the PBGC shall institute proceedings under Title IV of
       ERISA to terminate or to cause a trustee to be appointed to administer
       any such Plan or Plans or a proceeding shall be instituted by a fiduciary
       of any such Plan or Plans against either Borrower or any member of the
       Controlled Group to enforce Sections 515 or 4219(c)(5) of ERISA; or a
       condition shall exist by reason of which the PBGC would be entitled to
       obtain a decree adjudicating that any such Plan or Plans must be
       terminated; or there shall occur a complete or partial withdrawal form,
       or a default, within the meaning of Section 4219(c)(5) of ERISA, with
       respect to, one or more Multiemployer Plans which could cause either
       Borrower or one or more members of the Controlled Group to incur a
       current payment obligation in excess of $100,000; or

               (j)  Either Borrower or any Subsidiary thereof shall default in
       the performance or observance of any term, covenant or agreement on its
       part to be performed or observed pursuant to any of the provisions of any
       agreement with the Banks or any instrument delivered in favor of any Bank
       (other than, in either case, a Loan Document), and such default shall
       continue unremedied beyond the grace period (if any) provided for
       therein; or

               (k)  Any Security Instrument shall cease for any reason to be in
       full force and effect or shall cease to be effective to grant a perfected
       security interest in the collateral described in such Security Instrument
       with the priority stated to be granted thereby; or

               (l)  Either Borrower shall make any payment on account of its
       Subordinated Debt, except to the extent such payment is expressly
       permitted hereby or under any subordination agreement entered into with
       the Banks.

               9.2   Remedies Upon an Event of Default.  If any Event of Default
                     ---------------------------------
shall have occurred and be continuing, any Bank may (a) declare its Commitments
terminated (whereupon the Commitments shall be terminated) and/or (b) declare
the principal amount then outstanding of, and the accrued interest on, any of
its Borrower Loans and facility fee and all other amounts payable hereunder and
under the Borrower Notes it holds to be forthwith due and payable, whereupon
such amounts shall be and become immediately due and payable, without notice
(including, without limitation, notice of intent to accelerate), presentment,
demand, protest or other formalities of any kind, all of which are hereby
expressly waived by the Borrowers; provided that in the case of the occurrence
                                   --------
of an Event of Default with respect to the Borrowers referred to in clauses 
9.1(f) and 9.1(g) of Section 9.1, the Commitments shall be automatically
terminated and the principal amount then outstanding of and the accrued interest
on the any of the Borrower Loans and commitment fees and all other amounts
payable hereunder and under the Borrower Notes shall be and become automatically
and immediately due and payable, without notice (including, without limitation,
notice of intent to accelerate), presentment, demand, protest or other
formalities of any kind, all of which are hereby expressly waived by the
Borrowers. Each Bank agrees to provide notice to the other Bank or Banks and the
Collateral Agent with reasonable promptness (but in no event later than the next
Banking Day) of any actions it undertakes of the type described in clauses (a)
and (b) above.

       Section 10 The Collateral Agent
       ---------- --------------------

               10.1  Appointment of Collateral Agent; Powers and Immunities.
                     ------------------------------------------------------ 

               (a)  Each Bank hereby irrevocably appoints and authorizes SVB to
serve as the Collateral Agent hereunder and to act as its agent hereunder and
under the other Loan Documents in such capacity. Each Bank irrevocably
authorizes the Collateral Agent to take such action on 

<PAGE>
 
                                      -25-

behalf of each of the Banks and to exercise all such powers as are expressly
delegated to the Collateral Agent hereunder and in the other Loan Documents and
all related documents, together with such other powers as are reasonably
incidental thereto. The Collateral Agent shall not have any duties or
responsibilities or any fiduciary relationship with any Bank except those
expressly set forth in this Agreement.

               (b)  Neither the Collateral Agent nor any of its directors,
officers, employees or agents shall be responsible for any action taken or
omitted to be taken by it or them hereunder or in connection herewith, except
for its or their own gross negligence or wilful misconduct. Without limiting the
generality of the foregoing, neither the Collateral Agent nor any of its
Affiliates shall be responsible to the Banks for or have any duty to ascertain,
inquire into or verify: (i) any recitals, statements, representations or
warranties made by the Borrowers or any of their Subsidiaries or any other
Person whether contained herein or otherwise; (ii) the value, validity,
effectiveness, genuineness, enforceability or sufficiency of this Agreement, the
other Loan Documents or any other document referred to or provided for herein or
therein; (iii) any failure by the Borrowers or any of their Subsidiaries or any
other Person to perform its obligations under any of the Loan Documents; (iv)
the satisfaction of any conditions specified in Section 5 hereof; (v) the
existence, value, collectibility or adequacy of the Collateral or any part
thereof or the validity, effectiveness, perfection or relative priority of the
liens and security interests of the Banks therein; or (vi) the filing,
recording, refiling, continuing or re-recording of any financing statement or
other document or instrument evidencing or relating to the security interests or
liens of the Banks in the Collateral, provided, however, the Collateral Agent
                                      --------  ------- 
shall have the duty, subject to the terms of this Section 10, to take notice of
and to act upon any matter brought to its attention by a Bank.

               (c)  The Collateral Agent may employ agents, attorneys and other
experts, shall not be responsible to any Bank for the negligence or misconduct
of any such agents, attorneys or experts selected by it with reasonable care and
shall not be liable to any Bank for any action taken, omitted to be taken or
suffered in good faith by it in accordance with the advice of such agents,
attorneys and other experts. SVB in its separate capacity as a Bank shall have
the same rights and powers under the Loan Documents as the other Bank and may
exercise or refrain from exercising the same as though it were not the
Collateral Agent, and SVB and its Affiliates may accept deposits from, lend
money to and generally engage in any kind of business with the Borrowers as if
it were not the Collateral Agent.

               10.2  Actions By Collateral Agent. (a) The Collateral Agent
                     --------------------------- 
shall be fully justified in failing or refusing to take any action under this
Agreement as it reasonably deems appropriate unless it shall first have received
such advice or concurrence of the Banks and shall be indemnified to its
reasonable satisfaction by the Banks against any and all liability and expense
which may be incurred by it by reason of taking or continuing to take any such
action. The Collateral Agent shall in all cases be fully protected in acting, or
in refraining from acting, under this Agreement or any of the Loan Documents in
accordance with a request of the Banks, and such request and any action taken or
failure to act pursuant thereto shall be binding upon the Banks and all future
holders of the Borrower Notes.

               (b)  Whether or not an Event of Default shall have occurred, the
Collateral Agent may from time to time exercise such rights of the Collateral
Agent and the Banks under the Loan Documents as it determines may be necessary
or desirable to protect the Collateral and the interests of the Collateral Agent
and the Banks therein and under the Loan Documents.

               (c)  The Collateral Agent shall not incur any liability by acting
in reliance on any notice, consent, certificate, statement or other writing
(which may be a bank wire, telex, facsimile or similar writing) believed by it
to be genuine or to be signed by the proper party or parties.

<PAGE>
 
                                      -26-

               10.3  Indemnification.  Without limiting the obligations of the
                     --------------- 
Borrowers hereunder or under any other Loan Document, the Banks agree to
indemnify the Collateral Agent, ratably in accordance with their respective
Total Commitment Percentages, for any and all liabilities, obligations, losses,
damages, penalties, actions, judgments, suits, costs, expenses or disbursements
of any kind or nature whatsoever which may at any time be imposed on, incurred
by or asserted against the Collateral Agent in any way relating to or arising
out of this Agreement or any other Loan Document or any documents contemplated
by or referred to herein or therein or the transactions contemplated hereby or
thereby or the enforcement of any of the terms hereof or thereof or of any such
other documents; provided, however, that no Bank shall be liable for any of the
                 --------  -------                       
foregoing to the extent they result from the gross negligence or willful
misconduct of the Collateral Agent.

               10.4  Reimbursement.  Without limiting the provisions of Section
                     ------------- 
10.3, the Banks and the Collateral Agent hereby agree that the Collateral Agent
shall not be obliged to make available to any Person any sum which the
Collateral Agent is expecting to receive for the account of that Person until
the Collateral Agent has determined that it has received that sum. The
Collateral Agent may, however, disburse funds prior to determining that the sums
which the Collateral Agent expects to receive have been finally and
unconditionally paid to the Collateral Agent, if the Collateral Agent wishes to
do so. If and to the extent that the Collateral Agent does disburse funds and it
later becomes apparent that the Collateral Agent did not then receive a payment
in an amount equal to the sum paid out, then any Person to whom the Collateral
Agent made the funds available shall, on demand from the Collateral Agent,
refund to the Collateral Agent the sum paid to that Person. If the Collateral
Agent in good faith reasonably concludes that the distribution of any amount
received by it in such capacity hereunder or under the Loan Documents might
involve it in liability, it may refrain from making distribution until its right
to make distribution shall have been adjudicated by a court of competent
jurisdiction. If a court of competent jurisdiction shall adjudge that any amount
received and distributed by the Collateral Agent is to be repaid, each Person to
whom any such distribution shall have been made shall either repay to the
Collateral Agent its proportionate share of the amount so adjudged to be repaid
or shall pay over the same in such manner and to such Persons as shall be
determined by such court.

               10.5  Non-Reliance on Collateral Agent and Other Banks.  Each
                     ------------------------------------------------
Bank represents that it has, independently and without reliance on the
Collateral Agent or any other Bank, and based on such documents and information
as it has deemed appropriate, made its own appraisal of the financial condition
and affairs of the Borrowers and decision to enter into this Agreement and the
other Loan Documents and agrees that it will, independently and without reliance
upon the Collateral Agent or any other Bank, and based on such documents and
information as it shall deem appropriate at the time, continue to make its own
appraisals and decisions in taking or not taking action under this Agreement or
any other Loan Document. The Collateral Agent shall not be required to keep
informed as to the performance or observance by the Borrowers of this Agreement,
the other Loan Documents or any other document referred to or provided for
herein or therein or by any other Person of any other agreement or to make
inquiry of, or to inspect the properties or books of, any Person. Except for
notices, reports and other documents and information expressly required to be
furnished to the Banks by the Collateral Agent hereunder, if any, the Collateral
Agent shall not have any duty or responsibility to provide any Bank with any
credit or other information concerning any person which may come into the
possession of the Collateral Agent or any of its affiliates. Each Bank shall
have access to all documents relating to the Collateral Agent's performance of
its duties hereunder at such Bank's request. Unless any Bank shall promptly
object to any action taken by the Collateral Agent hereunder (other than actions
to which the provisions of Section 12.6(b) are applicable and other than actions
which constitute gross negligence or willful misconduct by the Collateral
Agent), such Bank shall conclusively be presumed to have approved the same.

<PAGE>
 
                                      -27-

               10.6  Resignation or Removal of Collateral Agent.  The
                     ------------------------------------------
Collateral Agent may resign at any time by giving 30 days prior written notice
thereof to the Banks and the Borrowers. Upon any such resignation, the Banks
shall have the right to appoint a successor Collateral Agent which shall be
Fleet or another financial institution reasonably acceptable to the Borrowers
and shall be a Bank or another financial institution having a combined capital
and surplus in excess of $100,000,000. If no successor Collateral Agent shall
have been so appointed by the Banks and shall have accepted such appointment
within 30 days after the retiring Collateral Agent's giving of notice of
resignation, then the retiring Collateral Agent may, on behalf of the Banks,
appoint a successor Collateral Agent which shall be reasonably acceptable to the
Borrowers and shall be a financial institution having a combined capital and
surplus in excess of $100,000,000. Upon the acceptance of any appointment as
Collateral Agent hereunder by a successor Collateral Agent, such successor
Collateral Agent shall thereupon succeed to and become vested with all the
rights, powers, privileges and duties of the retiring Collateral Agent, and the
retiring Collateral Agent shall be discharged from its duties and obligations
hereunder. After any retiring Collateral Agent's resignation, the provisions of
this Agreement shall continue in effect for its benefit in respect of any
actions taken or omitted to be taken by it while it was acting as Collateral
Agent.

               10.7  Ratable Sharing
                     ---------------

               The Banks hereby agree among themselves that if any of them
shall, whether by voluntary payment, by realization upon security, through the
exercise of any right of set-off or banker's lien, by counterclaim or cross
action or by the enforcement of any right under the Loan Documents or otherwise,
or as adequate protection of a deposit treated as cash collateral under the
Bankruptcy Code, receive payment or reduction of a proportion of the aggregate
amount of principal, interest, fees and other amounts then due and owing to that
Bank hereunder or under the other Loan Documents (collectively, the "Aggregate
                                                                     ---------
Amounts Due") to such Bank) which is greater than the proportion received by any
- -----------                                                                     
other Bank in respect of the Aggregate Amounts Due to such other Bank, then the
Bank receiving such proportionately greater payment shall (i) notify Collateral
Agent and each other Bank of the receipt of such payment and (ii) apply a
portion of such payment to purchase participations (which it shall be deemed to
have purchased from each seller of a participation simultaneously upon the
receipt by such seller of its portion of such payment) in the Aggregate Amounts
Due to the other Banks so that all such recoveries of Aggregate Amounts Due
shall be shared by all Banks in proportion to the Aggregate Amounts Due to them;
provided that if all or part of such proportionately greater payment received by
- --------                                                                        
such purchasing Bank is thereafter recovered from such Bank upon the bankruptcy
or reorganization of Borrower or otherwise, those purchases shall be rescinded
and the purchase prices paid for such participations shall be returned to such
purchasing Bank ratably to the extent of such recovery, but without interest.
The Borrowers expressly consents to the foregoing arrangement and agrees that
any holder of a participation so purchased may exercise any and all rights of
banker's lien, set-off or counterclaim with respect to any and all monies owing
by the Borrowers to that holder with respect thereto as fully as if that holder
were owed the amount of the participation held by that holder.


       Section 11    Definitions.
       ----------    ----------- 

               11.1  Certain Definitions.
                     ------------------- 

       "Accountants" means KMPG Peat Marwick or another accountant firm of
        -----------                                                       
national reputation or other certified public accountants selected by the
Borrower and approved by the Banks.

       "Adjusted Fixed Charges" means for any period, the sum of, (a) the amount
        ----------------------                                                  
of the scheduled installments of principal payable in respect of Indebtedness of
the Borrower and their 

<PAGE>
 
                                      -28-

Subsidiaries during such period, (b) the amount of the scheduled payments in
respect of Capitalized Lease Obligations during such period, and (c) 25% of
outstanding Working Capital Line of Credit Loans as of the last day of such
period.

       "Affiliate" means, with respect to any specified Person (the "Specified
        ---------                                                    ---------
Person"), any Person directly or indirectly controlling, controlled by or under
- ------                                                                         
direct or indirect common control with, the Specified Person and, without
limiting the generality of the foregoing, includes (i) any director or officer
of the Specified Person or any Affiliate of the Specified Person, (ii) any such
director's or officer's parent, spouse, child or child's spouse (a "relative"),
                                                                    --------   
(iii) any group acting in concert, of one or more such directors, officers,
relatives or any combination thereof (a "group"), (iv) any Person controlled by
                                         -----                                 
any such director, officer, relative or group in which any such director,
officer, relative or group beneficially owns or holds 5% or more of any class of
voting securities or a 5% or greater equity or profits interest and (v) any
Person or group which beneficially owns or holds 5% or more of any class of
voting securities or a 5% or greater equity or profits interest in the Specified
Person. For the purposes of this definition, the term "control" when used with
respect to any Specified Person means the possession, directly or indirectly, of
the power to direct or cause the direction of the management or policies of such
Specified Person, whether through the ownership of voting securities, by
contract or otherwise.

       "Agreement" shall mean this Credit Agreement.
        ---------                                   

       "Banking Day" shall mean any day, excluding Saturday and Sunday and
        -----------                                                       
excluding any other day which in the Commonwealth of Massachusetts or the State
of California is a legal holiday or a day on which banking institutions are
authorized by law to close.

       "Borrower Loans" shall have the meaning specified in Section 3.1.
        --------------                                                  

       "Borrower Notes" shall have the meaning specified in Section 2.2.
        --------------                                                  

       "Borrower Property" means any real property owned, occupied, or operated
        -----------------
by either Borrower or any of their Subsidiaries.

       "Capital Lease Obligations" means, as to any Person, the obligations of
        -------------------------                                             
such Person to pay rent or other amounts under a lease of (or other agreement
conveying the right to use) real and/or personal property which obligations are
required to be classified and accounted for as a capital lease on a balance
sheet of such Person under GAAP (including Statement of Financial Accounting
Standards No. 13 of the Financial Accounting Standards Board) and, for purposes
of this Agreement, the amount of such obligations shall be the capitalized
amount thereof, determined in accordance with GAAP (including FASB Statement No.
13).

       "Code" means the Internal Revenue Code of 1986, as amended, or any
        ----                                                             
successor statute.

       "Collateral" shall have the meaning given that term in the Security
        ----------                                                        
Agreement.

       "Commitment Percentage" shall mean, with respect to each Bank, that
        ---------------------
Bank's Working Capital Line Commitment expressed as a percentage of the Total
Working Capital Line Commitment of both the Banks.

       "Commitments" means, with respect to any Bank, its Working Capital Line
        -----------                                                           
Commitment and, if applicable, its Equipment Line Commitment.

<PAGE>
 
                                      -29-

       "Contractual Obligation" means, as to any Person, any provision of any
        ----------------------                                               
security (as such term is defined in the Securities Act of 1933, as amended)
issued by such Person or of any agreement, instrument or other undertaking to
which such Person is a party or by which it or any of its property is bound.

       "Controlled Group" means all members of a controlled group of
        ----------------
corporations and all trades or businesses (whether or not incorporated) under
common control which, together with the Borrower, are treated as a single
employer under Section 414 of the Code.

       "Current Liabilities" means, at any time, all liabilities of the
        -------------------  
Borrowers and their Subsidiaries at such time, on a consolidated basis, that
would be classified as current liabilities in accordance with GAAP, including,
without limitation, all Indebtedness of the Borrowers and their Subsidiaries
payable on demand or maturing within one year of such time, or renewable at the
option of the Borrowers or such Subsidiary for a period of not more than one
year from such time, and all serial maturity and periodic or installment
payments on any Indebtedness, to the extent such payments are required to be
made within one year from such time.

       "Default" means any condition or event that constitutes an Event of
        -------
Default or that with the giving of notice or lapse of time or both would, unless
cured or waived, become an Event of Default.

       "Eligible Domestic Accounts Receivable" means an account receivable owing
        -------------------------------------                                   
to either Borrower which met the following specifications at the time it came
into existence and continues to meet the same until it is collected in full:

               (a)  The original stated maturity of the account is not more than
       90 days after the invoice date thereof, and the account (regardless of
       its stated maturity date) does not remain unpaid more than 90 days after
       such invoice date.

               (b)  The account arose from the performance of services or an
       outright sale of goods by such Borrower, such goods have been shipped to
       the account debtor, and the Borrower has possession of, or has delivered
       to the Collateral Agent, shipping and delivery receipts evidencing such
       shipment.

               (c)  The account is owned solely by such Borrower, and is not
       subject to any assignment, claim, lien, or security interest, other than
       a security interest in favor of SVB as collateral agent for the Banks.

               (d)  The account is not one with respect to which the account
       debtor has exercised any rights of set-off, credit, allowance or
       adjustment which is not reflected in the dollar amount of the receivable;
       the account is not one as to which the account debtor disputes liability
       or makes any claim with respect thereto or as to which the Banks believe,
       in their sole discretion, that there may be a basis for dispute (but only
       to the extent of the amount subject to such dispute or claim), or which
       involves an account debtor subject to any insolvency proceeding, or
       becomes insolvent, or goes out of business.

               (e)  The account arose in the ordinary course of such Borrower's
       business and did not arise from the performance of services or a sale of
       goods to a supplier or employee of the Borrower.

               (f)  No notice of bankruptcy or insolvency of the account debtor
       has been received by or is known to the Borrowers.

<PAGE>
 
                                      -30-

               (g)  Such Borrower has pledged any instrument or chattel paper
       evidencing the account to SVB as collateral agent for the Banks pursuant
       to the provisions of the Security Agreement.

               (h)  Not more than 25% of the aggregate accounts receivables of
       the account debtor have remained unpaid for a period of more than ninety
       (90) days from the invoice date.

               (i)  The aggregate accounts receivables from the account debtor
       (including their Subsidiaries and Affiliates) do not exceed 25% of the
       total Eligible Accounts Receivable of the Borrowers; that portion of the
       account over the 25% level will be disqualified.

               (j)  The account does not relate to goods placed on consignment,
       guaranteed sale, sale or return, sale on approval, bill and hold, or
       other terms by reason of which the payment by the account debtor may be
       conditional.

               (k)  The account debtor is not an Affiliate, officer, employee or
       agent of either Borrower.

               (l)  The account debtor is not a Governmental Authority.

               (m)  The Borrowers do not owe any amounts to the account debtor
       for goods sold, services rendered or otherwise; to the extent that any
       amounts are so owed, the accounts of such account debtor in an amount
       equal to the amounts owed by the Borrowers to the account debtor shall be
       disqualified.

               (n)  The Banks have not notified the Borrowers that the Banks
       have determined that an account or account debtor is unsatisfactory for
       credit reasons (which determination shall not be made unreasonably).

               (o)  The account debtor is a person or entity located in the
       United States and the account arose out of services rendered or goods
       delivered in the United States.

       "Eligible International Accounts Receivable" means an account receivable
        ------------------------------------------                             
owing to either Borrower which met the requirements set forth in clauses (a)
through (g) and (i) through (n) for Eligible Domestic Accounts Receivable and
also the following specifications at the time it came into existence and
continues to meet the same until it is collected in full:

               (a)  The account debtor is a Person located outside the United
States and the account arose out of services rendered or goods delivered outside
the United States:

               (b)  Not more than 25% of the aggregate accounts receivable of
the account debtor have remained unpaid for a period of more than one hundred
twenty (120) days from the invoice date; and

               (c)  The obligations of the account debtor under such account are
supported either (i) by a transferable commercial letter of credit or standby
letter of credit issued for the account of the account debtor and for the
benefit of such Borrower by a bank or other financial institution approved by
the Banks in writing (and not subsequently disapproved), that (A) is payable in
the United States, (B) provides for the full payment to such Borrower or its
transferee of such account receivable, either (x) upon shipment of goods or the
provision of services and upon presentation of documentation that such goods
have been shipped or that such services have been provided, or (y) upon default
in payment of such account receivable in accordance with its terms, and (C) has
been

<PAGE>
 
                                      -31-

delivered and pledged to SVB as Collateral Agent for the Banks or (ii) by
insurance covering such obligations with terms that have been approved by the
Banks in writing and underwritten by an insurer that has been approved by the
Banks in writing (and not subsequently disapproved), or are those of an account
                                                     --                        
debtor that has been approved in writing by both Banks in their sole discretion
(which approval has not been subsequently cancelled or withdrawn).  A list of
account debtors approved by the Bank as of the date of this Agreement is
attached hereto as Schedule B.
                   ---------- 

       "Eligible Equipment" means any items of equipment that either Borrower 
        ------------------       
has requested that Fleet finance the purchase of through an advance under the
Equipment Line Commitment, and which, both on the date of such request and the
date of such advance, meets the following requirements:

               (a)  such equipment is not (i) telephone equipment, (ii) office
       furniture, (iii) a fixture or leasehold improvement, (iv) a motor
       vehicle, (v) software or (vi) intended by the Borrower to become a
       fixture or leasehold improvement;

               (b)  such equipment has been purchased by the Borrower from the
       manufacturer or a distributor thereof, has not been put in service by any
       Person prior to the date of the invoice furnished to the Borrower by such
       manufacturer or distributor, and has an invoice date of not earlier than
       April 3, 1995;

               (c)  such equipment is owned solely by the Borrower and is not
       subject to any leasehold interest, assignment, claim, lien or security
       interest, (other than a security interest in favor of SVB as collateral
       agent for the Banks pursuant to the Security Agreement or any other
       right, title of interest of any third party;

               (d)  such equipment is located in The Commonwealth of
       Massachusetts, the State of Maryland or the State of California and is in
       the possession of the Borrower; and

               (e)  if such Equipment is or is to be located on premises leased
      by the Borrower, Fleet has received a landlord's waiver in form and
      substance satisfactory to Fleet from the landlord of such premises.

       "Environmental Laws" means all federal, state, local and foreign laws,
        ------------------                                                   
and all regulations, notices or demand letters issued, promulgated or entered
thereunder, relating to pollution or protection of the environment and to
occupational health and safety, including, without limitation, laws relating to
emissions, discharges, releases or threatened releases of pollutants,
contaminants, chemicals, or Hazardous Substances into the environment
(including, without limitation, ambient air, surface water, ground water, land
surface or subsurface strata) or otherwise relating to the manufacture,
processing, distribution, use, treatment, storage, disposal, transport or
handling of pollutants, contaminants, chemicals or Hazardous Substances.

       "Equipment Line Commitment" shall have the meaning set forth in Section
        -------------------------                                             
2.1.

       "Equipment Line Commitment Expiration Date" shall have the meaning
        -----------------------------------------                        
specified in Section 2.1.

       "Equipment Line of Credit Loans" shall have the meaning set forth in
        ------------------------------                                     
Section 2.1.

       "Equipment Line Maturity Date" shall have the meaning specified in 
        ----------------------------                                       
Section 2.5.

       "Equipment Line Note" shall have the meaning set forth in Section 2.2.
        -------------------                                                  

<PAGE>
 
                                      -32-

       "ERISA" means the Employee Retirement Income Security Act of 1974, as
        -----                                                               
amended, or any successor statutes.

       "Event of Default" has the meaning set forth in Section 9.1.
        ----------------                                           

       "Financial Statements Date" means April 2, 1995.
        -------------------------                      

       "GAAP" means accounting principles generally accepted in the United 
        ----           
States applied on a consistent basis.

       "Governmental Approvals" shall mean any authorization, consent, order,
        ----------------------                                               
approval, license, lease, ruling, permit, tariff, rate, certification,
validation, exemption, filing or registration by or with, or notice to, any
Governmental Authority.

       "Governmental Authority" shall mean any federal, state, municipal or 
        ----------------------          
other governmental department, commission, board, bureau, agency, court,
tribunal or other instrumentality, domestic or foreign, and any arbitrator.

       "Guarantee" by any Person means any obligation, contingent or otherwise,
        ---------
of such Person directly or indirectly guaranteeing any Indebtedness or other
obligation of any other Person and, without limiting the generality of the
foregoing, any obligation, direct or indirect, contingent or otherwise of such
Person (a) to purchase or pay (or advance or supply funds for the purchase or
payment of) such Indebtedness or other obligation (whether arising by virtue of
partnership arrangements, by agreement to keep-well, to purchase assets, goods,
securities or services, to take-or-pay, or to maintain financial statement
conditions or otherwise) or (b) entered into for the purpose of assuring in any
other manner the obligee of such Indebtedness or other obligation of the payment
thereof or to protect such obligee against loss in respect thereof (in whole or
in part); provided that the term Guarantee shall not include endorsements for
          --------                                                           
collection or deposit in the ordinary course of business. The term "Guarantee"
used as a verb has a corresponding meaning.

       "Guarantor" shall have the meaning specified in Section 4.2.
        ---------                                                  

       "Guarantor Security Agreement" shall have the meaning specified in 
        ----------------------------          
Section 4.2.

       "Hazardous Substances" shall mean all hazardous and toxic substances,
        --------------------                                                
wastes or materials, hydrocarbons (including naturally occurring or man-made
petroleum and hydrocarbons), flammable explosives, urea formaldehyde insulation,
radioactive materials, biological substances, PCBs, pesticides, herbicides and
any other kind and/or type of pollutants, or contaminates and/or any other
similar substances or materials which, because of toxic, flammable, explosive,
corrosive, reactive, radioactive or other  properties that may be hazardous to
human health or the environment, are included under or regulated by any
Environmental Laws.

       "Indebtedness" of any Person at any date shall mean, (a) all indebtedness
        ------------                                                            
of such Person for borrowed money or for the deferred purchase price of property
or services (excluding current trade liabilities incurred in the ordinary course
of business and payable in accordance with customary practices, but including
any class of capital stock of such Person with fixed payment obligations or with
redemption at the option of the holder), or which is evidenced by a note, bond,
debenture or similar instrument, (b) all Capital Lease Obligations of such
Person, (c) all obligations of such Person in respect of acceptances issued or
created for the account of such Person, and all reimbursement obligations
(contingent or otherwise) of such Person in respect of any letters of credit
issued for the account of such Person, and (d) all liabilities secured by any
Lien on any 

<PAGE>
 
                                      -33-

property owned by such Person even though such Person has not assumed or
otherwise become liable for the payment thereof.

       "Intellectual Property" shall have the meaning specified in Section 6.16.
        ---------------------                                                   

       "Interest Period" means, with respect to any LIBOR Loan, the period
        ---------------                                                   
commencing on the date such LIBOR Loan is converted from a Prime Rate Loan or
the last day of the next preceding Interest Period with respect to such LIBOR
Loan and ending on the numerically corresponding day in the first, second or
third calendar month thereafter, as the Borrower may select as provided in
Section 3.6, except that each such Interest Period which commences on the last
Banking Day of a calendar month (or on any day for which there is no numerically
corresponding day in the appropriate subsequent calendar month) shall end on the
last Banking Day of the appropriate subsequent calendar month.

       "Investments" means, with respect to any Person (the "Investor"), (a) any
        -----------                                          --------           
investment by the Investor in any other Person, whether by means of share
purchase, capital contribution, purchase or other acquisition of a partnership
or joint venture interest, loan, time deposit, demand deposit or otherwise and
(b) any Guarantee by either Borrower of any Indebtedness or other obligation of
any other Person.

       "LIBOR Loan" means, at any time, that principal amount of the Working
        ----------                                                          
Capital Line of Credit Loans or the Equipment Line of Credit Loans, the interest
on which is determined at such time on the basis of rates referred to in the
definition of "LIBOR Rate".

       "LIBOR Rate" means with respect to any Interest Period pertaining to a
        ----------                                                           
LIBOR Loan, the rate per annum (rounded upwards, if necessary, to the nearest
1/16th of 1%) equal to the quotient of (a) the rate determined by SVB in the
case of Working Capital Line of Credit Loans and by Fleet in the case of
Equipment Line of Credit Loans to be the prevailing per annum rate at which
deposits in U.S. dollars are offered to such Bank by first-class banks two
Working Days prior to the beginning of such Interest Period in the London
interbank market at or about 10:00 a.m., Boston time, for delivery on the first
day of such Interest Period for the number of days comprised therein and in an
amount equal to the amount of the LIBOR Loan to be outstanding during such
Interest Period, divided by (b) a number equal to 1.00 minus the Reserve
Requirement for such LIBOR Loan during such Interest Period.

       "Lien" means any mortgage, pledge, hypothecation, conditional or 
        ----    
collateral assignment, deposit arrangement, encumbrance, lien (statutory or
other), or preference, priority or other security agreement of any kind or
nature whatsoever (including, without limitation, any conditional sale or other
title retention agreement, any lease that should be capitalized in accordance
with GAAP, and the filing of a financing statement under the Uniform Commercial
Code or comparable law of any jurisdiction), together with any renewal or
extension thereof.

       "Loan Documents" means, collectively, this Agreement, the Borrower Notes,
        --------------                                                          
the Guaranties, the Financing Statements, the Security Instruments, and all
other agreements and instruments that are from time to time executed in
connection with this Agreement, as each of such agreements and instruments may
be amended, modified or supplemented from time to time.

       "Material Adverse Effect" means a material adverse effect on (a) the
        -----------------------                                            
business, operations, property, condition (financial or otherwise) or prospects
of either Borrower, or of the Borrowers and their Subsidiaries taken as a whole,
(b) the ability of either Borrower to perform its obligations under this
Agreement, the Borrower Notes or any of the other Loan Documents, or (c) the
validity or 

<PAGE>
 
                                      -34-

enforceability of this Agreement, the Borrower Notes or any of the
other Loan Documents, or the rights or remedies of the Banks hereunder or
thereunder.

       "Multiemployer Plan" means at any time an employee pension benefit plan
        ------------------                                                    
within the meaning of Section 4001(a)(3) of ERISA to which either Borrower or
any member of the Controlled Group is then making or accruing an obligation to
make contributions or has within the preceding five plan years made
contributions, including for these purposes any Person which ceased to be a
member of the Controlled Group during such five year period.

       "Net Income" or "Net Loss" for any period in respect of which the amount
        ----------      --------                                               
thereof shall be determined, shall mean the aggregate of the consolidated net
income (or net loss) after taxes for such period (taken as a cumulative whole)
of the Borrowers and their Subsidiaries, determined in accordance with GAAP,
exclusive of the write-up of any asset.

       "Obligations" shall have the meaning given the term "Secured Obligations"
        -----------                                                             
in the Security Agreement.

       "Office of the Bank" shall mean (a) in the case of SVB, the banking 
        ------------------         
office of SVB located at 3003 Tasman Drive, Santa Clara, California 95054, or
such other location of which SVB shall notify the Borrowers, and (b) in the case
of Fleet, the banking officer of Fleet located at Fleet Center, 75 State Street,
Boston, Massachusetts 02106-2197, or such other location of which Fleet shall
notify the Borrower.

       "Operating Cash Flow" means, for any period, the sum (without 
        -------------------                   
duplication) determined on a consolidated basis for the Borrowers and their
Subsidiaries and in accordance with GAAP, of (a) Net Income, plus (b) the sum of
depreciation and amortization for such period.

       "PBGC" means the Pension Benefit Guaranty Corporation or any entity
        ----                                                              
succeeding to any or all of its functions under ERISA.

       "Permitted Liens" shall have the meaning set forth in Section 8.6.
        ---------------                                                  

       "Person" shall mean and include any individual, firm, corporation, 
        ------   
trust or other unincorporated organization or association or other enterprise or
any government or political subdivision, agency, department or instrumentality
thereof.

       "Plan" means any employee pension benefit plan which is covered by Title
        ----
IV of ERISA or subject to the minimum funding standards under Section 412 of the
Code and is either (a) maintained by either Borrower or any member of the
Controlled Group for employees of either Borrower or any member of the
Controlled Group or (b) maintained pursuant to a collective bargaining agreement
or any other arrangement under which more than one employer makes contributions
and to which either Borrower or any member of the Controlled Group is then
making or accruing an obligation to make contributions or has within the
preceding five plan years made contributions.

       "Pledge Agreement" shall have the meaning set forth in Section 4.1.
        ----------------                                                  

       "Post-Default Rate" means, in respect of any principal of the Working
        -----------------                                                   
Capital Line of Credit Loans, the Equipment Line of Credit Loans or any other
amount payable by either Borrower under this Agreement which is not paid when
due (whether at stated maturity, by acceleration or otherwise, a rate per annum
during the period commencing on the due date until such amount is paid in full
(after as well as before judgment) equal to the sum of 3% plus the higher of (i)
the rate 

<PAGE>
 
                                      -35-

of interest applicable to Prime Rate Loans and (ii) in the case of any LIBOR
Loan, the rate of interest otherwise applicable to such LIBOR Loan.

       "Prime Rate" shall mean the per annum rate of interest from time to time
        ----------                                                             
announced and made effective by Fleet as its Prime Rate (which rate may or may
not be the lowest rate available from the Bank at any given time).

       "Purchase Money Indebtedness" shall mean Indebtedness incurred to finance
        ---------------------------                                             
the acquisition of assets or the cost of improvements on real property or
leaseholds, in each case in an amount not in excess of the lesser of (a) the
purchase price or acquisition cost of said assets or the cost of said
improvements and (b) the fair market value of said assets or said improvements
on the date of acquisition of said assets or contract for said improvements.

       "Purchase Money Security Interest" shall mean (a) a security interest
        --------------------------------                                    
securing Purchase Money Indebtedness, which security interest applies solely to
the particular assets acquired with the Purchase Money Indebtedness that said
Purchase Money Security Interest secures, and (b) the renewal, extension and
refunding of such Purchase Money Indebtedness in an amount not exceeding the
amount thereof remaining unpaid immediately prior to such renewal, extension or
refunding.

       "Quick Ratio" means, at any time, all cash and accounts receivable, less
        -----------                                                            
reserves for doubtful accounts, less advance billing to customers, of the
Borrowers and their Subsidiaries at such time, on a consolidated basis,
determined in accordance with GAAP, divided by (a) the aggregate of all Current
Liabilities at such time, (b) then outstanding Working Capital Extensions of
Credit, and (c) the then current portion of long-term Indebtedness of the
Borrowers and their Subsidiaries as calculated in accordance with GAAP.

       "Regulation D" means Regulation D of the Board of Governors of the 
        ------------ 
Federal Reserve System as the same may be amended or supplemented from time to
time.

       "Regulatory Change" means any change on or after the date of this
        -----------------
Agreement in United States federal, state or foreign laws or regulations,
including Regulation D, or the adoption or making on or after such date of any
interpretations, directives or requests applying to a class of lenders including
the Banks of or under any United States federal or state, or any foreign, laws
or regulations (whether or not having the force of law) by any court or
governmental or monetary authority charged with the interpretation or
administration thereof (other than changes which affect taxes measured by or
imposed on the overall net income of any Bank by the jurisdiction in which such
Bank has its principal office.
  
       "Reserve Requirement" means, for any LIBOR Loans for any Interest Period
        -------------------                                                    
therefor, the average maximum rate at which reserves (including any marginal,
supplemental or emergency reserves) are required to be maintained during such
Interest Period under Regulation D by the Bank against "Eurocurrency
liabilities" (as such term is used in Regulation D).

       "Restricted Payment" means, with respect to either Borrower or any
        ------------------                                               
Subsidiary thereof, (a) any dividend or other distribution on any shares of
capital stock of Stock Borrower or such Subsidiary (except dividends payable
solely in shares of capital stock or rights to acquire capital stock of Alpha,
and cash dividends payable solely to either Borrower by a Subsidiary), (b) any
payment on account of the purchase, redemption, retirement or acquisition of (i)
any shares of the capital stock of any Borrower or a Subsidiary thereof or (ii)
any option, warrant, convertible security or other right to acquire shares of
the capital stock of any Borrower or a Subsidiary thereof, other than, in either
case, payments made solely to Alpha by a Subsidiary, and (c) any payment of any

<PAGE>
 
                                      -36-

principal of, or premium or interest on, or any required or optional purchase,
redemption or other retirement or other acquisition of any Subordinated Debt of
any Borrower other than on terms expressly permitted under the subordination
provisions approved by the Banks.

       "SEC" means the Securities and Exchange Commission.
        ---                                               

       "Security Agreement" shall have the meaning set forth in Section 4.1.
        ------------------                                                  

       "Security Instruments" means, collectively, the Security Agreement, the
        --------------------                                                  
Pledge Agreement and the Guarantor Security Agreements, and each other
instrument or agreement that purports to secure the Obligations of the Borrower
to the Banks.

       "Subordinated Debt" means Indebtedness of the Borrower that is 
        -----------------                  
subordinated to the Indebtedness of the Borrower owing to the Banks either (a)
pursuant to a subordination agreement in form and substance satisfactory to the
Banks between the Banks and the holder(s) of such Indebtedness, or (b) pursuant
to the terms thereof, where the Banks have confirmed in writing that such terms
are satisfactory to them.

       "Subsidiary" means, with respect to any Person, any corporation or other
        ----------                                                             
entity of which securities or other ownership interests having ordinary voting
power to elect a majority of the board of directors or other Persons performing
similar functions are at the time directly or indirectly owned by such Person.

       "Tangible Net Worth" means, at any time, the consolidated stockholders'
        ------------------                                                    
equity of the Borrower and their Subsidiaries at such time determined in
accordance with GAAP, less all assets that are reflected on the consolidated
                      ----                                                  
balance sheet of the Borrowers and their Subsidiaries at such time that would be
treated as intangibles under GAAP (including, but not limited, to goodwill,
capitalized software and excess purchase costs), plus all then outstanding
                                                 ----                     
Subordinated Debt.

       "Total Commitment Percentage" shall mean with respect to any Bank, that
        ---------------------------                                           
Bank's Working Capital Line Commitment and Equipment Line Commitment expressed
as a percentage of the Total Working Capital Line Commitment and Equipment Line
Commitment.

       "Total Senior Liabilities" means, at any time, the consolidated 
        ------------------------  
liabilities of the Borrowers and their Subsidiaries at such time, determined in
accordance with GAAP, less all then outstanding Subordinated Debt.
                      ----                                        

       "Type" shall refer to the determination of whether a Working Capital Line
        ----                                                                    
of Credit Loan or Equipment Line of Credit Loan is a Prime Rate Loan or a LIBOR
Loan, each of which shall constitute a Type.

       "UCC" shall have the meaning given such term in the Security Agreement.
        ---                                                                   

       "Unfunded Liabilities" means, with respect to any Plan, at any time, the
        --------------------                                                   
amount (if any) by which (a) the present value of all benefits under such Plan
exceeds (b) the fair market value of all Plan assets allocable to such benefits,
all determined as of the then most recent valuation date for such Plan, but only
to the extent that such excess represents a potential liability of the Borrower
or any member of the Controlled Group to the PBGC or such Plan under Title IV of
ERISA.

       "Working Capital Borrowing Base" shall have the meaning specified in
        ------------------------------                                     
Section 1.5.

<PAGE>
 
                                      -37-

       "Working Capital Commitment Expiration Date" shall have the meaning
        ------------------------------------------                        
specified in Section 1.1.

       "Working Capital Commitment Percentage" shall mean, with respect to any
        -------------------------------------                                 
Bank, that Bank's Working Capital Line Commitment expressed as a percentage of
the Total Working Capital Line Commitment.

       "Working Capital Extension of Credit" shall have the meaning set forth in
        -----------------------------------                                     
Section 1.5.

       "Working Capital Line Commitment" shall have the meaning specified in
        -------------------------------                                     
Section 1.1.

       "Working Capital Line of Credit Loans" shall have the meaning specified
        ------------------------------------                 
in Section 1.1.

       "Working Capital Note" shall have the meaning set forth in Section 1.3.
        --------------------                                                  

       "Working Day" means any day on which dealings in foreign currencies and
        -----------                                                           
exchange between banks may be carried on in the place where the Eurodollar
Lending Office is located and in Boston, Massachusetts and San Jose, California.

       Section12     Miscellaneous.
       ---------     --------------

               12.1  Accounting Terms and Definitions.  Unless otherwise
                     -------------------------------- 
specified herein, all accounting terms used herein shall be interpreted, all
determinations with respect to accounting matters hereunder shall be made, and
all financial statements and certificates and reports as to financial matters
required to be delivered hereunder shall be prepared, in accordance with GAAP;
provided that if any change in GAAP in itself materially affects the calculation
- --------        
of any financial covenant in this Agreement, the Borrowers may by notice to the
Banks, or the Banks may by notice to the Borrower, require that such covenant
thereafter be calculated in accordance with GAAP as in effect, and applied by
the Borrowers, immediately before such change in GAAP occurs. If such notice is
given, the compliance certificates delivered pursuant to Section 7.4 (d) after
such change occurs shall be accompanied by reconciliations of the difference
between the calculation set forth therein and a calculation made in accordance
with GAAP as in effect from time to time after such change occurs. To enable the
ready determination of compliance with the covenants set forth in this
Agreement, the Borrowers will not change the date on which their fiscal year or
any of their fiscal quarters end without thirty (30) days' prior notice to the
Banks.

               12.2  Amendments, Etc. No amendment or waiver of any provision of
                     ---------------
this Agreement or the Borrower Notes, nor consent to any departure by the
Borrowers therefrom, shall in any event be effective unless the same shall be in
writing and signed by all the Banks and then such waiver or consent shall be
effective only in the specific instance and for the specific purpose for which
given.

               12.3  Notices, Etc. All notices and other communications provided
                     ------------
for hereunder shall be in writing and shall be delivered by hand, by a
nationally recognized commercial overnight delivery service, by first class mail
or by telecopy, delivered, addressed or transmitted, if to the Borrowers, at the
following address: 20 Sylvan Road, Woburn, Massachusetts 01810, Attention: David
Aldrich, Chief Financial Officer, Telecopy No. (617) 938-3706, with a copy to
the attention of the Legal Department of the Borrower at the same address; if to
SVB, at its address at Wellesley Office Park, 45 William Street, Wellesley,
Massachusetts 02181, Attention: Joan S. Parsons, Vice President, Telecopy No.
(617) 431-9906; and if to Fleet, at its address at Fleet Center, 75 State
Street, Boston, Massachusetts 02106-2197, Attention: Catherine Bruton, Vice
President, with a copy in the case of any notice to a Bank, to Sullivan &
Worcester, One Post Office Square, Boston, 

<PAGE>
 
                                      -38-

Massachusetts 02109, Attention Dennis J. White, Esq., Telecopy No. (617) 338-
2939 or, as to each party, at such other address as shall be designated by such
party in a written notice to the other party. All such notices and
communications shall be deemed effective, (a) in the case of hand deliveries,
when delivered; (b) in the case of an overnight delivery service, on the next
Banking Day after being placed in the possession of such delivery service, with
delivery charges prepaid; (c) in the case of mail, three days after deposit in
the postal system, first class postage prepaid; and (d) in the case of telecopy
notices, when electronic indication of receipt is received, except that notices
to any Bank pursuant to the provisions of Section 1.7 shall not be effective
until received by such Bank.

               12.4  No Waiver; Remedies.  No failure on the part of any Bank to
                     -------------------
exercise, and no delay in exercising, any right hereunder or under the Borrower
Notes shall operate as a waiver thereof; nor shall any single or partial
exercise of any right hereunder or under the Borrower Notes preclude any other
or further exercise thereof or the exercise of any other right. The remedies
herein provided are cumulative and not exclusive of any remedies provided by
law.

               12.5  Right of Set-off.  (a) Upon the occurrence and during the
                     ----------------
continuance of any Event of Default, each Bank is hereby authorized at any time
and from time to time, to the fullest extent permitted by law, to set off and
apply any and all deposits (general or special, time or demand, provisional or
final) at any time held and other indebtedness at any time owing by such Bank to
or for the credit or the account of the Borrowers against any and all of the
obligations of the Borrower now or hereafter existing under this Agreement and
the Borrower Notes, irrespective of whether or not such Bank shall have made any
demand hereunder and although such obligations may be contingent or unmatured.

               (b)  Each Bank agrees promptly to notify the Borrowers after any
such set-off and application, provided that the failure to give such notice
                              --------   
shall not affect the validity of such set-off and application. The rights of the
Banks under this Section 12.5 are in addition to other rights and remedies
(including, without limitation, other rights of set-off) which the Banks may
have.

               12.6  Expenses; Indemnification. (a)  The Borrowers shall pay on
                     ------------------------- 
demand (i) the reasonable fees and disbursements of counsel to the Banks in
connection with the preparation of this Agreement and the preparation or review
of each agreement, opinion, certificate and other document referred to in or
delivered pursuant hereto; (ii) all reasonable out-of-pocket costs and expenses
of the Banks in connection with the administration of this Agreement and the
other Loan Documents, (including without limitation any lien search or filing
fees) and any waiver or amendment of any provision hereof or thereof, including
without limitation, the reasonable fees and disbursements of counsel for the
Banks, and of any field examiner or auditor retained by the Banks as
contemplated in Section 7.8; and (iii) if any Event of Default occurs, all
reasonable costs and expenses incurred by the Banks, including the reasonable
fees and disbursements of counsel to the Banks, and of any appraisers,
environmental engineers or consultants, or investment banking firms retained by
the Banks in connection with such Event of Default or collection, bankruptcy,
insolvency and other enforcement proceedings related thereto. Each Borrower
agrees on a joint and several basis to pay, indemnify and hold the Banks
harmless from, any and all recording and filing fees, and any and all
liabilities with respect to, or resulting from any delay in paying, stamp,
excise or other taxes, if any, which may be payable or determined to be payable
in connection with the execution and delivery of or the consummation or
administration of any of the transactions contemplated by, or any amendment,
supplement or modification of, or any waiver or consent under or in respect of,
this Agreement or the other Loan Documents, or any documents delivered pursuant
hereto or thereto.

<PAGE>
 
                                      -39-

               (b)  Each Borrower agrees on a joint and several basis to
indemnify each Bank and its officers and directors and hold such Bank and its
officers and directors harmless from and against any and all liabilities,
losses, damages, costs and expenses of any kind (including, without limitation,
the reasonable fees and disbursements of counsel for such Bank in connection
with any investigative, administrative or judicial proceeding initiated by a
third party, whether or not such Bank shall be designated a party thereto) which
may be incurred by such Bank, relating to or arising out of this Agreement or
any other Loan Document, or the existence of any Hazardous Substance on, in, or
under any Borrower Property, or any violation of any applicable Environmental
Laws for which the Borrower or any Subsidiary thereof has any liability or which
occurs upon any Borrower Property, or the imposition of any Lien under any
Environmental Laws, provided that no Bank shall have the right to be indemnified
                    -------- 
hereunder for its own gross negligence or willful misconduct as determined by a
court of competent jurisdiction.

               (c)  The agreements in this Section 12.6 shall survive the
repayment of the Borrower Notes, and all other amounts payable under this
Agreement and the other Loan Documents.

               12.7  Binding Effect.  This Agreement shall become effective when
                     -------------- 
it shall have been executed by the Borrowers and the Banks (provided, however,
in no event shall this Agreement become effective until signed by an officer of
SVB in California) and thereafter shall be binding upon and inure to the benefit
of the Borrowers and the Banks and their respective successors and assigns,
except that the Borrower shall not have the right to assign its rights hereunder
or any interest herein without the prior written consent of the Banks. Each Bank
may assign to any financial institution all or any part of, or any interest
(undivided or divided) in, such Bank's rights and benefits under this Agreement
or the Borrower Notes, and to the extent of that assignment such assignee shall
have the same rights and benefits against the Borrower hereunder as it would
have had if such assignee were the Bank making the Working Capital Line of
Credit Loans and the Equipment Line of Credit Loan hereunder.

               12.8  Severability.  Any provision of this Agreement which is
                     ------------  
prohibited, unenforceable or not authorized in any jurisdiction shall, as to
such jurisdiction, be ineffective to the extent of such prohibition,
unenforceability or non-authorization without invalidating the remaining
provisions hereof or affecting the validity, enforceability or legality of such
provision in any other jurisdiction.

               12.9  GOVERNING LAW.  THIS AGREEMENT SHALL BE GOVERNED BY, AND
                     -------------
CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE COMMONWEALTH OF MASSACHUSETTS.

               12.10 WAIVER OF JURY TRIAL.  EACH BANK AND EACH BORROWER AGREES
                     --------------------    
THAT NONE OF THEM NOR ANY ASSIGNEE OR SUCCESSOR SHALL (A) SEEK A JURY TRIAL IN
ANY LAWSUIT, PROCEEDING, COUNTERCLAIM OR ANY OTHER ACTION BASED UPON, OR ARISING
OUT OF, THIS AGREEMENT, ANY RELATED INSTRUMENTS, ANY COLLATERAL OR THE DEALINGS
OR THE RELATIONSHIP BETWEEN OR AMONG ANY OF THEM, OR (B) SEEK TO CONSOLIDATE ANY
SUCH ACTION WITH ANY OTHER ACTION IN WHICH A JURY TRIAL CANNOT BE OR HAS NOT
BEEN WAIVED. THE PROVISIONS OF THIS PARAGRAPH HAVE BEEN FULLY DISCUSSED BY THE
BANKS AND THE BORROWER, AND THESE PROVISIONS SHALL BE SUBJECT TO NO EXCEPTIONS.
NEITHER THE BANKS NOR THE BORROWERS HAVE AGREED WITH OR REPRESENTED TO THE OTHER
THAT THE PROVISIONS OF THIS PARAGRAPH WILL NOT BE FULLY ENFORCED IN ALL
INSTANCES.

               12.11 VENUE, CONSENT TO SERVICE OF PROCESS. EACH BORROWER ACCEPTS
                     ------------------------------------
FOR ITSELF AND IN CONNECTION WITH ITS PROPERTIES, GENERALLY AND 

<PAGE>
 
                                      -40-

UNCONDITIONALLY, THE NON-EXCLUSIVE JURISDICTION OF ANY STATE OR FEDERAL COURT OF
COMPETENT JURISDICTION IN THE COMMONWEALTH OF MASSACHUSETTS (AND IN THE EVENT
SVB IS FOR ANY REASON DENIED ACCESS TO THE COURTS OF MASSACHUSETTS, THEN SOLELY
IN SUCH CASE, CALIFORNIA) IN ANY ACTION, SUIT OR PROCEEDING OF ANY KIND AGAINST
IT WHICH ARISES OUT OF OR BY REASON OF THIS AGREEMENT, THE BORROWER NOTES, ANY
OTHER LOAN DOCUMENT, OR THE TRANSACTIONS CONTEMPLATED HEREBY OR THEREBY,
IRREVOCABLY AGREES TO BE BOUND BY ANY FINAL JUDGMENT RENDERED BY ANY SUCH COURT
IN ANY SUCH ACTION, SUIT OR PROCEEDING IN WHICH IT SHALL HAVE BEEN SERVED WITH
PROCESS IN THE MANNER HEREINAFTER PROVIDED, SUBJECT TO EXERCISE AND EXHAUSTION
OF ALL RIGHTS OF APPEAL AND TO THE EXTENT THAT IT MAY LAWFULLY DO SO, WAIVES AND
AGREES NOT TO ASSERT, BY WAY OF MOTION, AS A DEFENSE OR OTHERWISE, IN SUCH
ACTION, SUIT OR PROCEEDING ANY CLAIMS THAT IT IS NOT PERSONALLY SUBJECT TO THE
JURISDICTION OF SUCH COURT, THAT ITS PROPERTY IS EXEMPT OR IMMUNE FROM
ATTACHMENT OR EXECUTION, THAT THE ACTION, SUIT OR PROCEEDING IS BROUGHT IN AN
INCONVENIENT FORUM OR THAT THE VENUE THEREOF IS IMPROPER, AND AGREES THAT
PROCESS MAY BE SERVED UPON IT IN ANY SUCH ACTION, SUIT OR PROCEEDING IN THE
MANNER PROVIDED BY CHAPTER 223A OF THE GENERAL LAWS OF MASSACHUSETTS, RULE 4
OF THE MASSACHUSETTS RULES OF CIVIL PROCEDURE OR RULE 4 OF THE FEDERAL RULES OF
CIVIL PROCEDURE.

               12.12 Headings.  Section headings in this Agreement are included
                     --------
herein for convenience of reference only and shall not constitute a part of this
Agreement for any other purpose.

               12.13 Counterparts.  This Agreement may be signed in one or more
                     ------------   
counterparts each of which shall constitute an original and all of which taken
together shall constitute one and the same instrument.

               12.14 Joint and Several Obligations.  Each and every
                     -----------------------------
representation, warranty, covenant and agreement made by either of the
Borrowers, hereunder and under the other Loan Documents shall be joint and
several, whether or not so expressed, and such obligations of either of the
Borrowers shall not be subject to any counterclaim, setoff, recoupment or
defense based upon any claim either Borrower may have against the other Borrower
or the Bank, and shall remain in full force and effect without regard to, and
shall not be released, discharged or in any way affected by, any circumstance or
condition affecting the other Borrower, including without limitation (a) any
waiver, consent, extension, renewal, indulgence or other action or inaction
under or in respect of this Agreement or any other Loan Document, or any
agreement or other document related thereto with respect to the other Borrower,
or any exercise or nonexercise of any right, remedy, power or privilege under or
in respect of any such agreement or instrument with respect to the other
Borrower, or the failure to give notice of any of the foregoing to Trans-Tech,
it being agreed by Trans-Tech that notice in each such case to Alpha shall be
sufficient and that no notice to the Borrowers shall be effective without notice
to Alpha; (b) any invalidity or unenforceability, in whole or in part, of any
such agreement or instrument with respect to the other Borrower; (c) any failure
on the part of the other Borrower for any reason to perform or comply with any
term of any such agreement or instrument; (d) any bankruptcy, insolvency,
reorganization, arrangement, readjustment, composition, liquidation or similar
proceeding with respect to the other Borrower or its properties or creditors; or
(e) any other occurrence whatsoever, whether similar or dissimilar to the
foregoing, with respect to the other Borrower. Each Borrower hereby waives any
requirement of diligence or promptness on the part of the Bank in the
enforcement of the Bank's rights hereunder or under any other Loan Document with
respect to the obligations of itself or of the other Borrower. Without limiting
the foregoing any failure to make any demand upon, to pursue or 

<PAGE>
 
SCHEDULE A

TITLE OF PROPERTY EXCEPTION (6.12)


The equipment leased from AT&T approximately $1,600,000

The equipment leased from ComDisco approximately $3,000,000

The equipment leased from Telogy, Inc. approximately $210,000

The equipment leased from American National Leasing Corp approximately $46,000

The equipment leased from Electro Rent Corporation approximately $185,000

The equipment leased from Digital Equipment Corporation approximately $750,000

The equipment securing the following obligations of the Debtor: Frederick 
County, Maryland Industrial Development Revenue Bond $2,000,000 dated June 18,
1982.

The equipment securing the following obligations of the Debtor: Loan and 
Security Agreement dated December 15, 1993 between the Debtor and the County 
Commissioners of Frederick County, Maryland under CDBG Grant Number MD93-ED70 
($960,000)

The equipment in an amount of approximately $662,000 securing the obligations of
the Debtor with Motorola, Inc.

Additional equipment to be purchased with MICRF/Sunny Day Loan for approximately
$1,300,000.

The equipment purchased by Trans-Tech, Inc. under the agreement dated September
21, 1992 between the Ferrite Development Consortium of which Trans-Tech, Inc. is
a member and the Advanced Research Project Agency.


Section 8.6

     Liens as disclosed in the Borrower's financial statement and in exception 
     to Section 6.12 above.


<PAGE>
 
SCHEDULE A

SUBSIDIARIES - SECTION 6.10

 . See Financial Statements

ENVIRONMENTAL-SECTION 6.15

 . See financial Statements      -

MAINTENANCE OF EXISTENCE - SECTION 7.1

 . Alpha Industries GmbH to be liquidated

SECTION 8.8(b)

 . BayBank
 . Barclays Bank - England
 . Bank of Boston
 . Dresdner Bank AG - Germany
 . Riggs National Bank - Maryland
 . Farmers & Mechanics - Maryland
 . First Insterstate Bank - California
 . Banque Scalbert Dupont - France
 . Credit Lyonnaise - France

<PAGE>
 
                                  SCHEDULE A

                                 SECTION 6.16

Patents, Trademarks, and Copyrights


<TABLE>  
<CAPTION>
     No.      Issued    Inventory       Name                        Expires     ASSIGNEE
     ---      ------    ---------       ----                        -------     --------
<S>          <C>        <C>           <C>                           <C>         <C>  
4,126,723    21 NOV 78  Huntt         PROCESS FOR ASSEMBLING ...    21 NOV 95   TTI
4,172,318    30 OCT 79  Huntt         METHOD OF JOINING ...         30 OCT 96   TTI
4,833,302    23 May 89  Huntt         APPARATUS AND PROCESS ...     23 MAY 06   Alpha
8/241668        n/a     _________     BARIUM OXIDE RARE EARTH ...        n/a    n/a
8/366396        n/a     _________     DIELECTRIC CERAMIC ...             n/a    TTI
5,262,370    _________  _________     DIELECTRIC CERAMIC ...        _________   TTI
4,942,146    17 JUL 90  Negas et al   DENSE CERAMIC ALLOYS ...      17 JUL 07   ALpha
4,898,534    06 FEB 90  Huntt         APPARATUS AND PROCESS ...     06 FEB 07   Alpha
5,213,851    _________  Synder et al  PROCESS FOR PREPARING ...        ________ TTI
4,734,749    29 MAR 88  Levi          SEMICONDUCTOR MESA ...        29 MAR 96   Alpha
4,157,550    05 JUN 79  Reid, et al   MICROWAVE DETECTING ...       05 JUN 96   Alpha
4,222,014    09 SEP 80  Ondria        MICROWAVE/MILLIMETERWAVE ...  09 SEP 97   Alpha
4,309,677    05 JAN 82  Goldman       MICROWAVE "T" TYPE ...        05 JAN 99   Alpha
4,348,651    07 SEP 82  Reid          CASCADING DIODE ...           07 SEP 95   Alpha
</TABLE>
 


<PAGE>
 

<TABLE>     
<CAPTION>   
     No.     Issued         Inventory            Name                  Expires      ASSIGNEE      
     ---     ------         ---------           ------                 --------     --------      
<S>          <C>            <C>            <C>                         <C>          <C>           
4,721,959    26 JAN 88      Syrigos et al  MONOPULSE COMPARATOR        26 JAN 05    Alpha         
4,673,945    16 JUN 87      Syrigos        BACKFIRE ANTENNA ...        16 JUN 04    Alpha         
8/506457     27 JUL 95      Panaccione     PADDLE EXPOSING                n/a       Alpha          
</TABLE>
 



<TABLE> 
<CAPTION> 
     No.       Issued        Country          Mark            Expires         Owner
     ---       -------      ---------      ----------        --------         ----
<S>          <C>            <C>            <C>               <C>              <C> 
1,123,175    31 JUL 79      USA            TRANS-TECH        31 JUL 99        TTI
887,644      31 MAR 68      USA            TRANS-TECH        10 MAR 00        TTI
913,242      29 JUN 92      Germany        ai logo           29 JUN 02        Alpha 
35575        01 JUN 72      Israel         ai logo           02 JUN 07        Alpha 
B1091885     03 MAR 88      UK             ai logo           _________        Alpha
B366362      01 OCT 81      Australia      ai logo           01 OCT 02        Alpha 
377872       05 NOV 81      Benelux        ai logo           05 NOV 01        Alpha  
274164       26 NOV 82      Canada         ai logo           26 NOV 97        Alpha
12721982     26 MAR 83      Denmark        ai logo           _________        Alpha
113531       07 APR 93      Norway         ai logo           07 APR 03        Alpha
191931       06 JUL 84      Sweden         ai logo           06 JUL 04        Alpha
318439       11 JAN 82      Switzerland    ai logo           11 JAN 02        Alpha
31738        17 FEB 88      Yugoslavia     ai logo           17 FEB 98        Alpha
</TABLE>
 

<PAGE>
 

<TABLE> 
<CAPTION>
   No.           Issued            Country                     Mark                    Expires                   Owner
- ------------     -------         -----------            --------------------           ---------  -              -----

<S>              <C>             <C>                    <C>                            <C>                       <C> 
37892            16 DEC 85       Massachusetts                ai logo                  16 DEC  95                Alpha 

1459085          29 SEP 87       USA                          ai logo                  29 SEP  07                Alpha  

2202172          30 JAN 90       Japan                        ai logo                  30 JAN  00                Alpha 

380703           16 OCT 87       Taiwan                       ai logo                  15 OCT  97                Alpha 

403052B          21 MAR 90       India                        ai logo                  21 MAR  97                Alpha 

1197061          03 MAR 92       France                       ALPHA INDUSTRIES         _________                 Alpha 
</TABLE>
 

<PAGE>
 
SCHEDULE B

SCHEDULE OF APPROVED FOREIGN ACCOUNT DEBTORS

ALCATEL                              DATAMATIC
ALCATEL (Italy)                      MILIMONDES
BELTRONICS                           PANGAEA (Hong Kong)
COM-DEV                              PANGAEA (Singapor)
DENISTRON                            SOGO ELECTRONICS
ELECTRONICA SPA                      MUNICOM
ERICSSON
LK PRODUCTS
MTI
MICROELIT
MICROWAVE ASSOC.
MITEC
MOTOROLA
MOTOROLA (Malaysia)
MOTOROLA (Finland)
NERA AS (Norway)
NOKIA
PANGAEA
RAFAEL
SAMSUNG
SIEMENS
SIEMENS TELE
TADICOM
TADI RAN
TALCO
TECTELCOM
TOP-REL
UNIDEN
VECCOM



<TABLE> <S> <C>


<PAGE>

<ARTICLE> 5
<LEGEND> 
This schedule contains summary financial information extracted in part from 
the financial statements of Alpha Industries, Inc. and Subsidiaries as of and
for the six months ended October 1, 1995 and is qualified in its entirety by 
reference to such financial statements. 
</LEGEND>
<MULTIPLIER> 1,000
       
<S>                                         <C>
<PERIOD-TYPE>                                 6-MOS
<FISCAL-YEAR-END>                       MAR-31-1996
<PERIOD-START>                          APR-02-1995
<PERIOD-END>                            OCT-01-1995
<CASH>                                        2,104
<SECURITIES>                                      0
<RECEIVABLES>                                16,837      
<ALLOWANCES>                                    685   
<INVENTORY>                                  10,747      
<CURRENT-ASSETS>                             29,568      
<PP&E>                                       77,672      
<DEPRECIATION>                               55,844      
<TOTAL-ASSETS>                               52,046      
<CURRENT-LIABILITIES>                        18,459      
<BONDS>                                       2,401     
<COMMON>                                      2,014     
<PREFERRED-MANDATORY>                             0 
<PREFERRED>                                       0 
<OTHER-SE>                                   28,286      
<TOTAL-LIABILITY-AND-EQUITY>                 52,046      
<SALES>                                      46,167      
<TOTAL-REVENUES>                             46,167      
<CGS>                                        30,888      
<TOTAL-COSTS>                                43,540      
<OTHER-EXPENSES>                               (383)   
<LOSS-PROVISION>                                 29  
<INTEREST-EXPENSE>                              427   
<INCOME-PRETAX>                               2,583     
<INCOME-TAX>                                    388   
<INCOME-CONTINUING>                           2,195     
<DISCONTINUED>                                    0 
<EXTRAORDINARY>                                   0 
<CHANGES>                                         0 
<NET-INCOME>                                  2,195     
<EPS-PRIMARY>                                  0.27  
<EPS-DILUTED>                                  0.27
        


</TABLE>