Loan No. ____________




                     RENEWAL AND SUBSTITUTE PROMISSORY NOTE
                              Salt Lake City, Utah

                                  June 30, 2000


$15,000,000.00

         1. Promise to Pay.  For value  received,  Evans &  Sutherland  Computer
Corporation, a Utah corporation ( "Borrower"),  and Evans & Sutherland,  GMBH, a
German limited company; Evans & Sutherland, Ltd., a U.K. public limited company;
and Evans & Sutherland Graphics  Corporation,  a Utah corporation  (collectively
"Additional  Obligors"),  jointly and severally,  promise 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
Renewal and Substitute  Promissory Note (the  "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 a variable  interest rate of four
percent (4%) per annum above  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.



                                       2

         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.

         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 and Additional Obligors agree 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 and Additional  Obligors 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 and Additional  Obligors agree 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  and  Additional  Obligors  will be charged  five  percent  (5%) of the
regularly scheduled payment or $50.00, whichever is greater. The imposition of a
late charge does not in any way extend any payment date or the maturity  date of
the Note.



                                       3

         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 six percent (6%) per annum above  Lender's  Prime Rate. If
this Promissory Note becomes in default or payment is accelerated,  Borrower and
Additional  Obligors  agree 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  and/or
Additional  Obligors  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.

     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 or Additional Obligors.

     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.

         13. Renewal Note. This Renewal and Substitute  Promissory Note replaces
and renews the Promissory  Note dated March 31, 2000 executed by Borrower in the
amount of  $15,000,000.00  and is being  executed in connection  with the Second
Loan  Modification  Agreement  dated  June 30,  2000 and  entered  into  between
Borrower, Additional Obligors and Lender.



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         DATED:   June 30, 2000.

                                     BORROWER

                                     EVANS & SUTHERLAND COMPUTER CORPORATION,
                                     a Utah corporation


                                     By: /s/ Richard J. Gaynor
                                        ---------------------------
                                     Richard J. Gaynor
                                     Vice President and Chief Financial Officer



                                     ADDITIONAL OBLIGORS

                                     EVANS & SUTHERLAND, GMBH,
                                     a German limited company



                                     By: /s/ David Janke
                                        ---------------------------
                                     David Janke
                                     Its: Managing Director

                                     EVANS & SUTHERLAND, LTD.,
                                     a U.K. public limited company



                                     By: /s/ Stuart Anderson
                                        ---------------------------
                                     Stuart Anderson
                                     Its: Managing Director

                                     EVANS & SUTHERLAND GRAPHICS CORPORATION,
                                     a Utah corporation



                                     By: /s/ Mark McBride
                                        ---------------------------
                                     Mark McBride
                                     Its: Secretary