Loan No.

                                 PROMISSORY NOTE
                              Salt Lake City, Utah

                                 March 31, 2000

$15,000,000.00

         1. Promise to Pay.  For value  received,  Evans &  Sutherland  Computer
Corporation,  a Utah corporation ( "Borrower"),  promises to pay to the order of
Zions First National Bank, a national  banking  association  ("Lender"),  at its
office at P.O. Box 25822 One South Main Street,  in Salt Lake City,  Utah 84125,
or at such  other  place as Lender  may from time to time  designate,  in lawful
money of the United  States of America,  the  principal  sum of Fifteen  Million
Dollars  ($15,000,000.00),  or so much of that sum as may be advanced under this
Promissory Note by any holder, together with all other advances made pursuant to
this Promissory Note (collectively the "Principal Indebtedness"),  plus interest
as computed  below.  This  Promissory Note is referred to in and arises out of a
Loan Agreement dated the Closing Date (the "Loan  Agreement")  between  Borrower
and Lender and is secured by the Collateral.

         2.  Interest.  The  outstanding  balance of the Principal  Indebtedness
shall bear  interest  from the Closing  Date at Lender's  Prime Rate (as defined
below).  Interest shall accrue daily on the outstanding balance of the Principal
Indebtedness  both before and after  judgment,  and shall be  calculated  on the
basis of a 360-day year.  Interest is computed on a 360-day year simple interest
basis by applying the ratio for the annual interest rate over a year of 360 days
(365/360),  multiplied by the outstanding  principal balance,  multiplied by the
actual  number of days the  principal  balance is  outstanding.  The  applicable
annual total interest rate, as computed in accordance with the foregoing,  shall
be adjusted  with each change of the Prime  Rate,  effective  on the date of the
change in the Prime Rate.

         If, at any time  during the term of the Loan,  Borrower  fails to fully
satisfy any of the Tier I financial  covenants  as set forth in Section  5.15 of
the Loan Agreement, the interest rate of this Promissory Note shall be increased
for each calendar quarter  thereafter until said Tier I financial  covenants are
fully satisfied, to a variable interest rate of two and one-half percent (2.50%)
per annum above Lender's Prime Rate.

         As used in this Promissory  Note, the term "Prime Rate" shall be deemed
to mean an index which is  determined  daily by the  published  commercial  loan
variable  rate index held by any two of the  following  banks:  Chase  Manhattan
Bank, Wells Fargo Bank N.A., and Bank of America N.A. In the event no two of the
above banks have the same  published  rate, the bank having the median rate will
establish  Lender's Prime Rate. If, for any reason beyond the control of Lender,
any of the  aforementioned  banks  becomes  unacceptable  as a reference for the
purpose of determining  the Prime Rate used herein,  Lender may, five days after
posting notice in Lender's bank offices,  substitute another comparable bank for
the one determined  unacceptable.  As used in this paragraph,  "comparable bank"
shall mean one of the ten largest  commercial banks  headquartered in the United
States of America.  This definition of Prime Rate is to be strictly  interpreted
and is not  intended  to serve any  purpose  other  than  providing  an index to
determine the variable  interest rate used herein.  It is not the lowest rate at
which  Lender  may make  loans  to any of its  customers,  either  now or in the
future.

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         3. Payments. Accrued interest computed in accordance with the foregoing
shall be due and payable on May 1, 2000 and  thereafter on the first day of each
and every month  thereafter  to and  including  March 30,  2001,  when the total
unpaid Principal  Indebtedness and all accrued and unpaid interest thereon shall
be due and payable in full. Checks will constitute payment only when collected.

         4.  Lender's  Expenditures.  Borrower  agrees  to  pay  on  demand  any
reasonable  expenditures  made by Lender in accordance  with the Loan Documents,
including,  but not limited to, the payment of taxes, insurance premiums,  costs
of  maintenance  and  preservation  of the  Property,  common  expense and other
assessments  relating to the Property,  and attorney fees and costs  incurred in
connection  with any  matter  pertaining  hereto or to the  security  pledged to
secure the  Principal  Indebtedness  or any portion  thereof  (collectively  the
"Lender  Expenditures").  At the election of Lender, all Lender Expenditures may
be added to the unpaid balance of this  Promissory Note and become a part of and
on a parity with the Principal  Indebtedness secured by the Trust Deed and shall
accrue  interest at such rate as may be computed from time to time in the manner
prescribed in this Promissory Note.

         5. Prepayment.  Borrower shall have the right, from time to time and at
any time,  to prepay all, or any part, of the Loan at any time or times prior to
the  maturity of the Loan  without  payment of any premium or penalty.  Borrower
agrees  that  any  prepayment  shall  be made to  Lender  in the form of cash or
equivalent  prior to 3:00 p.m.  Mountain Time to  facilitate  investment of such
prepayment  funds for account of Lender.  In the event this deadline is not met,
interest  will  continue  to  accrue  on the  unpaid  loan  balance  at the rate
specified herein through and including Lender's next regular banking day.

         6. Late  Charge.  If any  payment  is  fifteen  (15) days or more late,
Borrower will be charged five percent (5%) of the regularly scheduled payment or
$50.00, whichever is greater.

         7.  Default  Interest  Rate.  If default  occurs in the  payment of any
principal or interest past any applicable grace or cure period,  or if any Event
of Default occurs under the Loan Documents,  time being the essence hereof, then
(a) the entire  unpaid  balance,  shall,  at the  election of the holder of this
Promissory Note and without notice of such election,  become immediately due and
payable in full, and (b) without notice and whether or not the principal balance
has been accelerated, all outstanding principal shall bear interest at a default
rate from the date when due until paid,  both before and after  judgment,  which
default rate shall be four percent (4%) per annum above  Lender's Prime Rate. If
this  Promissory  Note  becomes in default or payment is  accelerated,  Borrower
agrees  to pay to the  holder  of this  Promissory  Note all  collection  costs,
including reasonable attorney fees and legal expenses,  in addition to all other
sums due under this Promissory Note.

         8. Application of Payments. Any and all payments by Borrower under this
Promissory  Note shall be applied as follows:  first,  to the  repayment  of any
Lender Expenditures advanced by Lender under this Promissory Note or pursuant to
the Loan Documents;  second,  to the payment of any late charges;  third, to the
payment of accrued interest on the Principal  Indebtedness;  and fourth,  to the
payment of the Principal Indebtedness.

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         9. Extension.  The time for any payment  required under this Promissory
Note may be extended from time to time at the election of Lender.  Acceptance by
Lender of additional security or guarantees for the performance of the terms and
provisions  contained  in this  Promissory  Note shall not in any way affect the
liability of Borrower.

         10.  Governing  Law.  This  Promissory  Note shall be  governed  by and
construed in accordance with the laws of the State of Utah.

         11.  Interest  Limitation.  All agreements  between the parties to this
Promissory  Note and the holder of this  Promissory  Note are  hereby  expressly
limited  so that in no  contingency  or event  whatsoever,  whether by reason of
deferment  or  advancement  of  the  proceeds  of the  Loan  evidenced  by  this
Promissory  Note,  acceleration  of maturity of the Loan, or otherwise shall the
amount paid or agreed to be paid to holder for the use, forbearance or detention
of the money to be loaned under this Promissory Note exceed the maximum interest
rate permissible  under  applicable law. If, from any  circumstance  whatsoever,
fulfillment of any provision of this  Promissory  Note or of any other agreement
between  the  parties  to this  Promissory  Note  and the  holder,  at the  time
performance of such provision shall be due, shall involve transcending the limit
of validity  prescribed by law, then, ipso facto, the obligation to be fulfilled
shall be reduced to the limit of such validity. In the event that any payment is
received by the holder of this  Promissory  Note which would otherwise be deemed
to be a payment  of  interest  in excess of the  maximum  allowed  by law,  such
payment shall be deemed to have been paid on account of principal at the time of
receipt.  This  provision  shall never be superseded or waived and shall control
every other  provision of this  Promissory  Note and all agreements  between the
parties and the holder of this Promissory Note.

         12. Defined Terms.  Unless  otherwise  defined in this Promissory Note,
capitalized  terms  hereinafter  used have the  meanings  given them in the Loan
Agreement.

         DATED: March 31, 2000.

                            BORROWER

                            EVANS & SUTHERLAND COMPUTER CORPORATION,
                            a Utah corporation


                            By:      /S/ R. GAYNOR
                                     Richard J. Gaynor
                                     Vice President and Chief Financial Officer





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