Exhibit 10.13


February 6, 1995
(As of September 27, 1994)


Samuel Ochlis
6786 Willow Wood Drive
#1003 Boca West
Boca Raton, FL  33434


Dear Sam:

    This  letter,  when signed by you and  returned  to CSP Inc.  ("CSPI" or the
"Company"),  will  constitute  an  amendment  of  the  Employment  and  Deferred
Compensation  Agreement  dated as of January 5, 1987  between  you and CSPI,  as
previously amended (your "Employment Agreement"). As you know, the terms of this
amendment,  as set forth below,  were authorized by CSPI's Board of Directors at
its meeting on September 27, 1994.

    This will confirm that you and CSPI have agreed as follows:

    1. TERM OF PART-TIME EMPLOYMENT. You are now serving as a part-time employee
of the Company.  The  Part-Time  Term, as defined in the  Employment  Agreement,
shall end, unless sooner terminated under Section 4 of the Employment  Agreement
for cause or by reason of your disability or death, on September 1, 1995,  which
is the last day of the Company's fiscal year.

    2. BENEFICIARY OF DEFERRED COMPENSATION: TIMING OF PAYMENTS. Under Section 6
of the Employment  Agreement any deferred  compensation  that would otherwise be
payable to you shall, in the event of your death prior to the termination of the
10-year  Deferred  Compensation  Period  described  in  Section 6, be payable to
Samuel  Ochlis and H.  Kenneth  Fish,  or their  successors,  as Trustees of the
Samuel Ochlis Trust - 1991,  dated December 23, 1991 (the  "Trust"),  and not to
your surviving  spouse.  Annual amounts payable to you or to the Trust each year
as  deferred  compensation  under  Section  6 shall  be paid in  twelve  monthly
installments.

    3. OPTION TO PURCHASE COMPANY AUTOMOBILE. The Company agrees to sell you, at
your option, the Company-owned  automobile currently in your care, for cash. The
cash purchase  price shall be the net book value of the  automobile on the books
of the  Company  at  September  1, 1995.  You agree to notify the  Company on or
before August 18, 1995 if you intend to exercise this option to purchase. If you
do not exercise this option to purchase, then you agree to return the automobile
to the Company on or before September 1, 1995.

    4. MEDICAL INSURANCE.  Following the termination of your employment with the
Company  other  than for  cause,  the  Company  will  provide  health and dental
insurance benefits to you as follows:

    (a) For the period  commencing on September 2, 1995 and  continuing  through
the last day of fiscal 1996 (August 30, 1996), you shall be entitled to continue
as a participant,  on an individual  basis,  in the health and dental  insurance
plans regularly maintained by the Company as the same may, from time to time, be
in force and effect for its employees generally ("Health and Dental Plans").

    (b) Continued  participation  in the Health and Dental  Plans,  or either of
them,  shall be subject to the payment by you of your  allocable  portion of the
premiums  for the type of coverage  elected  under the Health and Dental  Plans.
Your allocable portion of the premiums shall be determined according to the same
formula as is, from time to time,  applicable  to Company  employees  generally.
Although subject to change, the current formula generally  applicable to Company
employees  requires  each  employee to pay 14 percent of total premium costs and
the Company pays 86 percent of total premium costs.  The Company will deduct the
allocable  portion of the monthly premium from the monthly  payments of deferred
compensation made to you under the Employment Agreement.

    (c)  Benefits  payable  to you,  or for your  benefit,  under the Health and
Dental Plans shall be secondary to any similar  benefits  payable to you, or for
your benefit,  under Medicare.  In other words, any benefits  otherwise  payable
under the Health and Dental  Plans shall be reduced to the  extent,  and only to
the extent,  paid under any Medicare  coverage as from time to time in force and
effect.

    (d) Although the Company has no present plans to do so, the Company reserves
the right to change  insurance  carriers and to add to,  modify or terminate its
medical  and  dental  insurance  plans  and  policies  on the same  basis as the
Company's employees generally, subject to the conditions and limitations of, and
for the period of time provided in, this paragraph 4.

    5.  ENTIRE  AGREEMENT.  All of the terms and  provisions  of the  Employment
Agreement  other than those  amended  hereby  shall  continue  in full force and
effect.  The  Employment  Agrement,  as  amended  hereby,  contains  the  entire
understanding  between you and the Company with respect to the subject matter of
the Employment Agreement and supersedes all prior understandings and agreements,
written or oral, relating to the subject matter of the Employment Agreement.  No
waiver, alteration or modification of the terms and provisions of the Employment
Agreement  may be made  except by a writing  signed by you and by an  authorized
representative of CSPI.

    If the foregoing  correctly sets forth our  understanding,  please  indicate
your agreement by  countersigning  the enclosed extra copy of this letter in the
space provided below and returning that copy to me.

                                                   CSP INC.


                                                By:____________________________
                                                   David S. Botten, President

ACCEPTED AND AGREED TO:


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Samuel Ochlis