Document:

Dispute Resolution Agreement Exhibit 10.1

                                                        Exhibit 10.1

                          DISPUTE RESOLUTION AGREEMENT

     THIS DISPUTE RESOLUTION AGREEMENT ("Agreement") is made and entered into as
of the 30th day of January, 2002 by and between DCI, Inc., a Kansas corporation
("Seller"), and Design Concepts, Inc., a Kansas corporation ("Buyer"), Chris I.
Hammond, William D. Cook and Larry C. Klusman (collectively, the "Buyer's
Stockholders");

                               W I T N E S S E T H

     WHEREAS, Buyer desires to purchase certain assets of Seller associated with
Seller's Instrumentation Product Line, consisting of the products and models
listed on Schedule "A" (the "Product Line");

     WHEREAS, Seller desires to sell the Product Line to Buyer; and

     WHEREAS, Seller and Buyer's Stockholders have, over a period of time,
engaged in discussions concerning representations and warranties made by Buyer's
Stockholders in a prior transaction involving Seller and Buyer's Stockholders
and Seller wish to resolve and compromise the claims related to that
transaction.

     NOW, THEREFORE, in consideration of the premises and the mutual agreements
contained herein, and other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties hereby agree as
follows:

                                   ARTICLE I
                               PURCHASE OF ASSETS

     SALE AND PURCHASE OF ASSETS: On the Closing Date (as hereinafter defined),
Seller shall sell, assign, transfer and convey to Buyer, and Buyer shall
purchase and accept from Seller, on the terms and conditions set forth herein,
all of Seller's right, title and interest in and to the following tangible and
intangible assets of Seller related to the Product Line (collectively, the
"Assets") described below:

     1.1 TANGIBLE ASSETS:

          a. Product Line Inventory. All inventories of raw materials,
     work-in-progress and finished goods related to the Product Line and
     described on Schedule "B" attached hereto (the "Product Line Inventory");

          b. Excess Inventory. Certain inventory not specifically related to the
     Product Line and described on Schedule "C" attached hereto (the "Excess
     Inventory");

          c. Machinery and Equipment. All of Seller's machinery, equipment,
     fixtures, and other similar miscellaneous tangible assets used exclusively
     for the Product Line as described on Schedule "D" attached hereto (the
     "Equipment");

          d. Marketing Materials. All photos, catalog information, and trade
     show equipment used exclusively for the Product Line (the "Marketing
     Materials");

          e. Miscellaneous Tangible Assets. All other tangible assets or
     properties of Seller to the extent used solely in conjunction with the
     Product Line (the "Miscellaneous Assets").

     1.2 INTANGIBLE ASSETS:

          a. Intellectual Property. All of Seller's drawings, manuals,
     procedures, computer software, and other intellectual property, but only to
     the extent it is associated with the design, manufacture, and support of
     the Product Line (the "Intellectual Property");

          b. Records. All customer lists, customer files, sales and purchase
     records, sales proposals, sales literature, office records and other books
     and records relating solely to the Product Line (the "Books and Records");

          c. Assumed Contracts. Those of Seller's contracts, agreements, leases,
     arrangements, customer orders, and commitments related to the Product Line,
     and described on Schedule "E" attached hereto (the "Assumed Contracts");

          d. Miscellaneous Intangible Assets. All other intangible assets or
     properties of Seller to the extent used solely in conjunction with the
     Product Line (the "Miscellaneous Assets").

     1.3 COPIES OF CUSTOMER INFORMATION. Seller reserves the right to retain
copies of customer files for any customers for which it reasonably believes it
will have future opportunities for ongoing business relationships.

     1.4 COST OF MOVING ASSETS. As soon as possible following the Closing, Buyer
shall remove the Assets from the property of Seller. All costs incurred for the
transport or transfer of any of the Assets will be borne by Buyer.

                                   ARTICLE II
                                 PURCHASE PRICE

     The Buyer's Stockholders are the holders of a $1,248,000.00 promissory note
dated as of February 7, 2000, by Airport Systems International, Inc., and the
Buyer's Stockholders (the "Old Note"), executed pursuant to the Stock Purchase
Agreement (defined in Section 8.3 below). Seller and Buyer's Stockholders have,
over a period of time, engaged in discussions concerning

representations and warranties made by Buyer's Stockholders in a prior
transaction involving Seller. Buyer's Stockholders and Seller wish to resolve
and compromise the claims related to that transaction in the following way.
First, Seller will transfer to Buyer the Excess Inventory, which Seller and
Buyer's Stockholders acknowledge to be valued at $200,000.00, and as a result of
that transfer, the Buyer's Stockholders agree to forgive $200,000.00 on the Old
Note. Next, Seller will transfer the Equipment valued at approximately
$13,000.00, and as a result of that transfer, Buyer's Stockholders agree to
forgive such amount on the Old Note. In addition, Seller will transfer to Buyer
the Product Line Inventory valued at approximately $196,000.00, and as a result
of that transfer, Buyer's Stockholders agree to forgive on the Old Note an
amount equal to the net book value thereof, calculated as described below.
Furthermore, the Buyer's Stockholders agree to forgive $158,348.00 due on the
Old Note. Buyer's Stockholders will receive $81,824.00 in interest that has
accrued and remains unpaid under the Old Note. Buyer's Stockholders will also
receive $246,375.00 of principal repayment on the Old Note. The amount remaining
after the above transactions on the Old Note will be converted into two new
notes, the first of which is a new convertible promissory note in an estimated
amount equal to $410,625.00 (the "New Note") and the Buyer's Stockholders will
deliver to Seller the Old Note, marked "CANCELLED". The final amount of the New
Note will be determined on the Closing Date in the following manner. At the
close of the business on the Closing Date, Seller will generate a computer
printout reflecting the net book value of the Equipment and the Product Line
Inventory. For every dollar that the combined net book values of both the
Equipment and the Product Line Inventory at the close of business on the Closing
Date exceed $200,000.00, the New Note will be decreased one dollar. For every
dollar that the combined net book values of both the Equipment and the Product
Line Inventory at the close of business on the Closing Date are below
$200,000.00, the New Note will be increased one dollar. Notwithstanding the
foregoing, if the combined net book value of the Product Line Inventory and
Equipment exceeds $205,000.00, it is within the discretion of the Buyer to
determine (i) if it will accept all items of Equipment and Product Line
Inventory that cause the combined net book value to exceed $205,000, and (ii) if
not, which Product Line Inventory it will not accept to reduce the net book
value of Product Line Inventory and Equipment to no less than $205,000.00. The
second new note will be in the amount of $31,652 (the "Second New Note").

                                  ARTICLE III
                         REPRESENTATIONS AND WARRANTIES

     3.1 REPRESENTATIONS AND WARRANTIES OF SELLER. Seller represents and
warrants to Buyer as follows:

          a. Due Organization and Qualification. Seller is a corporation duly
     organized, validly existing and in good standing under the laws of the
     state of its organization.

          b. Authority. Seller has the corporate power and authority to sell the
     Assets and consummate the transactions provided for in this Agreement and
     this Agreement and all instruments and agreements contemplated by this
     Agreement to which Seller is a party

     or signatory have been duly authorized, executed and delivered by Seller
     and constitute the legal, valid and binding obligation of Seller
     enforceable in accordance with their terms. All necessary corporate
     proceedings of Seller have been taken to authorize this Agreement and the
     agreements and instruments contemplated by this Agreement and all
     transactions contemplated hereby.

          c. Title to Assets. Seller has, and upon conveyance, transfer and
     assignment of the Assets to Buyer by Seller at the Closing, Buyer will
     acquire and hold, good and marketable title to all of the Assets, in each
     case, free and clear of any and all options, rights, pledges, security
     interests, liens, charges, and other encumbrances whatsoever (hereinafter
     sometimes collectively referred to as "Encumbrances"), except such
     Encumbrances as are placed on the Assets by Buyer.

          d. Condition of Assets. All of the tangible Assets are transferred in
     "as is" condition, with no implied warranty.

          e. Contracts. True, correct and complete copies of the Assumed
     Contracts have heretofore been provided by Seller to Buyer, and all such
     documents are genuine and in all respects what they purport to be. Each of
     the Assumed Contracts is valid and enforceable in accordance with its
     terms. Seller is not in default in the performance, observance or
     fulfillment of any material obligation, covenant or condition contained in
     the Assumed Contracts, and no event has occurred that with the giving of
     notice or lapse of time would constitute a default thereunder.

          f. Ability to Carry Out Agreement. The execution and delivery of this
     Agreement and the consummation of the transactions contemplated hereby do
     not and will not violate the provisions of the Articles of Incorporation or
     Bylaws of Seller or any note, indenture, mortgage, lease or other agreement
     or instrument to which Seller is a party or by which it is bound.

     3.2 REPRESENTATIONS AND WARRANTIES OF BUYER AND BUYER'S STOCKHOLDERS. Buyer
represents and warrants to Seller as follows:

          a. Due Organization and Qualification. Buyer is a corporation duly
     organized, validly existing and in good standing under the laws of the
     state of its organization.

          b. Authority. Buyer has the corporate power and authority to acquire
     the Assets and consummate the transactions provided for in this Agreement
     and this Agreement and all instruments and agreements contemplated by this
     Agreement to which Buyer is a party or signatory have been duly authorized,
     executed and delivered by Buyer and constitute the legal, valid and binding
     obligation of Buyer enforceable in accordance with their terms. All
     necessary corporate proceedings of Buyer have been taken to authorize this
     Agreement and the agreements and instruments contemplated by this Agreement
     and all transactions contemplated hereby.

          c. Ability to Carry Out Agreement. The execution and delivery of this
     Agreement and the consummation of the transactions contemplated hereby do
     not and will not violate the provisions of the Articles of Incorporation or
     Bylaws of Buyer or any note, indenture, mortgage, lease or other agreement
     or instrument to which Buyer is a party or by which it is bound.

          d. Duration of Warranty Coverage. To the knowledge of the Buyer and
     the Buyer's Stockholders, there are no warranties that extend longer than
     twelve (12) months.

     3.3 SURVIVAL OF REPRESENTATIONS AND WARRANTIES. The representations and
warranties made in Section 3.1(c) and (e) shall survive Closing for two years
and six months, respectively. All other representations and warranties made by
the parties in this Agreement or any exhibit, schedule, instrument or
certificate provided hereunder shall expire at Closing.

                                   ARTICLE IV
                              PRE-CLOSING COVENANTS

     4.1 NEGATIVE COVENANTS OF SELLER. Except as may be otherwise expressly
provided herein, from and after the date of this Agreement and until the Closing
Date, with respect to the Assets without the consent of Buyer, Seller covenants
and agrees that it will not:

          a. Encumbrances. Execute, grant or suffer any Encumbrance upon the
     Assets;

          b. Disposition of Assets. Effect any sale, transfer, Encumbrance or
     other disposition of the Assets and properties which would otherwise be
     included in the Assets, except for sales of inventories in the ordinary
     course of business, and except for machinery, and equipment replaced with
     items of equivalent or greater value;

          c. Assumed Contracts. Amend, modify, assign, transfer, grant or
     terminate any of the Assumed Contracts;

     4.2 AFFIRMATIVE COVENANTS OF SELLER. From and after the date of this
Agreement and until the Closing Date, Seller covenants and agrees that it will:

          a. Ordinary Course of Business. Carry on the operations of the Product
     Line only in the usual, regular and ordinary course consistent with good
     business practices and with prior practices;

          b. Maintenance of Relationships. Use commercially reasonable efforts
     to maintain and preserve its business organization and to maintain its
     present relationships with customers, suppliers and others having business
     dealings with the Product Line;

          c. Maintenance of the Assets. Maintain the Assets in existing
     operating repair and maintain the level of inventories in accordance with
     past practices;

          d. Payment of Obligations in Ordinary Course. Pay and discharge all
     costs and expenses of maintaining and operating the Assets as they become
     due and pay and discharge any such costs and expenses which at the date
     hereof are past due, unless contested in good faith;

          e. Maintenance of Records. Maintain its books, accounts, including
     accounts receivable and records in the usual, regular and customary manner
     on a basis consistently applied; and

          f. Additional Inventory. Seller may, at Seller's discretion, make
     available to Buyer for purchase additional surplus/on-hand inventory at
     cost for a period of one (1) year. In addition Seller must make available
     to Buyer for purchase any additional custom manufactured or specially
     ordered parts at prices to be quoted; provided, however, any such order
     must have a minimum value of $1,000.

                                   ARTICLE V
                              CONDITIONS TO CLOSING

     5.1 CONDITIONS TO BUYER'S OBLIGATION TO CLOSE. The obligations of Buyer
under this Agreement, are subject to the satisfaction, or the written waiver
thereof, by Buyer of the following conditions on or prior to the Closing Date:

          a. Representations and Warranties of Seller. All of the
     representations and warranties of Seller contained in this Agreement shall
     have been true and correct when made, and shall be true and correct in all
     material respects on and as of the Closing Date.

          b. Covenants of Seller. All of the covenants and agreements herein on
     the part of Seller to be complied with or performed on or before the
     Closing Date, including, but not limited to, the documents or items to be
     delivered at Closing as set forth in Article VI, shall have been fully
     complied with and performed.

          c. No Material Adverse Changes. There shall not have occurred any
     material adverse change in the Assets.

     5.2 CONDITIONS TO SELLER'S OBLIGATION TO CLOSE. The obligations of Seller
under the Agreement are subject to the satisfaction, or the written waiver
thereof, of the following conditions on or prior to the Closing Date:

          a. Representations and Warranties of Buyer. All of the representations
     and warranties of Buyer contained in this Agreement shall have been true
     and correct when made, and shall be true and correct in all material
     respects on and as of the Closing Date.

          b. Covenants of Buyer. All of the covenants and agreements herein on
     the part of Buyer to be complied with or performed on or before the Closing
     Date, including, but not limited to, the documents or items to be delivered
     at Closing as set forth in Article VI, shall have been fully complied with
     and performed.

                                   ARTICLE VI
                                     CLOSING

     6.1 CLOSING DATE. The closing of the sale and purchase provided for herein
(the "Closing") shall take place at the offices of Blackwell Sanders Peper
Martin LLP, 9401 Indian Creek Parkway, Suite 1200, Overland Park, Kansas 66210,
at 10:00 a.m., on January 31, 2002 or at such other place, time and date as the
parties may mutually agree (the "Closing Date").

     6.2 ITEMS TO BE DELIVERED AT CLOSING BY SELLER. At the Closing, Seller
shall perform all acts necessary to put Buyer in actual and complete possession
and control of the Assets, including, but not limited to, the delivery to Buyer
of such instruments of sale, assignment, transfer and conveyance duly executed
and in form and content satisfactory to counsel for Buyer as are necessary to
vest in Buyer good and marketable title to and possession of the Assets. Without
limiting the generality of the foregoing, Seller shall deliver the following at
Closing:

          a. A Bill of Sale executed by Seller selling, assigning and
     transferring to Buyer all right, title and interest in and to any and all
     personal property comprising the Assets; and

          b. An executed Registration Rights Agreement by and between Elecsys
     Corporation and the Buyer's Stockholders that provides "piggyback" rights
     to the Buyer's Stockholders for two (2) years from the date of Closing;

          c. Seller will pay by wire transfer of immediately available funds the
     amount of $328,199.00, representing past due interest of $81,824.00 and
     principal of $246,375.00 on the Old Note.

     6.3 ITEMS TO BE DELIVERED AT CLOSING BY BUYER'S STOCKHOLDERS. At the
Closing, Buyer's Stockholders shall deliver the Old Note stamped "CANCELLED".

     6.4 ITEMS TO BE DELIVERED AFTER CLOSING BY SELLER On Friday February 1,
2002 Seller will deliver the New Note and the Second New Note to Buyer's
Stockholders.

     6.5 FURTHER ASSURANCES. Seller shall from time to time after the Closing,
at the request of Buyer and without further consideration, execute and deliver
such other instruments of conveyance, assignment and transfer and take such
other action as Buyer may reasonably request to more effectively convey, assign,
transfer to and vest in Buyer good and marketable title to and possession of the
Assets.

                                  ARTICLE VII
                                 INDEMNIFICATION

     7.1 INDEMNIFICATION BY SELLER. Seller shall defend, indemnify and hold
Buyer and each of Buyer's subsidiaries, shareholders, affiliates, officers,
directors, employees, agents, successors and assigns (collectively, "Buyer's
Indemnified Persons") harmless from, against and in respect of any and all
liabilities and obligations of Seller including, but not limited to, any claim
arising out of the operation of the Seller's business, or for products
manufactured or sold prior to the Closing Date except those liabilities which
have been expressly assumed by Buyer: (i) as Assumed Contracts and (ii) as
warranty obligations pursuant to Section 8.1 warranty.

     7.2 INDEMNIFICATION BY BUYER. Buyer shall defend, indemnify and hold Seller
and each of Seller's subsidiaries, shareholders, affiliates, officers,
directors, employees, agents, successors and assigns (collectively, "Seller's
Indemnified Persons") harmless from, against and in respect of any and all
liabilities and obligations of Buyer including, but not limited to, any claim
arising out of the operation of Buyer's business, or for products manufactured
or sold after the Closing Date.

     7.3 CLAIMS FOR INDEMNIFICATION. Whenever any claim shall arise for
indemnification under this Section 7, the Buyer, the Buyer's Stockholder's or
the Sellers, as the case may be, seeking indemnification (the "Indemnified
Party"), shall promptly notify the other party (the "Indemnifying Party") of the
claim and, when known, the facts constituting the basis for such claim. In the
event of any such claim for indemnification hereunder resulting from or in
connection with any claim or legal proceedings by a third party, the notice
shall specify, if known, the amount or an estimate of the amount of the
liability arising therefrom. The Indemnified Party shall not settle or
compromise any claim by a third party for which it is entitled to
indemnification hereunder without the prior written consent, which shall not be
unreasonably withheld or delayed, of the Indemnifying Party; provided, however,
that if suit shall have been instituted against the Indemnified Party and the
Indemnifying Party shall not have taken control of such suit after notification
thereof as provided in this Section 7.3, the Indemnified Party shall have the
right to settle or compromise such claim upon giving notice to the Indemnifying
Party as provided in this Section 7.3.

     7.4 DEFENSE BY THE INDEMNIFYING PARTY. In connection with any claim which
may give rise to indemnity hereunder resulting from or arising out of any claim
or legal proceeding by a person other than the Indemnifying Party, at the sole
cost and expense of the Indemnifying Party, may, upon written notice to the
Indemnified Party, assume the defense of any such claim or legal proceeding if
the Indemnifying Party acknowledges to the Indemnified Party in writing the
obligation of the Indemnifying Party to indemnify the Indemnified Party with
respect to all elements of such claim. If the Indemnifying Party assumes the
defense of any such claim or legal proceeding, the Indemnifying Party shall
select counsel reasonably acceptable to the Indemnified Party to conduct the
defense of such claims or legal proceedings and at the sole cost and expense of
the Indemnifying Party shall take all steps necessary in the

defense or settlement thereof. The Indemnified Party shall thereafter be
entitled to participate in and assume control of the defense of any such action
only if the Indemnified Party has a reasonable basis for concluding that its
interests are in conflict with those of the Indemnifying Party. The Indemnifying
Party shall not consent to a settlement of, or the entry of any judgment arising
from, any such claim or legal proceeding, without the prior written consent of
the Indemnified Party (which consent shall not be unreasonably withheld or
delayed). The Indemnified Party shall be entitled to participate in (but not
control) the defense of any such action, with its own counsel and at its own
expense. If the Indemnifying Party does not assume the defense of any such claim
or litigation resulting therefrom within 30 days after the date such claim is
made: (a) the Indemnified Party may defend against such claim or litigation in
such manner as it may deem appropriate, including, but not limited to, settling
such claim or litigation, after giving notice of the same to the Indemnifying
Party, on such terms as the Indemnified Party may deem appropriate, and (b) the
Indemnifying Party shall be entitled to participate in (but not control) the
defense of such action, with its counsel and at its own expense. If the
Indemnifying Party or the Indemnifying Party thereafter seeks to question the
manner in which the Indemnified Party defended such third party claim or the
amount or nature of any such settlement, the Indemnifying Party shall have the
burden to prove by a preponderance of the evidence that the Indemnified Party
did not defend or settle such third party claim in a reasonably prudent manner.

                                  ARTICLE VIII
                            POST CLOSING COMMITMENTS

     8.1 POST CLOSING COVENANTS.

          a. Use of Brand Name. Buyer, as soon as practical after the Closing,
     will establish a new logo that differs substantially in color and design
     from that of Seller's existing logo. Seller hereby grants Buyer permission
     to use existing materials and literature containing Seller's current logo
     until the supply of those materials is depleted, but in no event beyond
     twelve (12) months after Closing. Notwithstanding the previous sentence,
     the Buyer shall under no circumstances refer to itself as "DCI" nor shall
     the Buyer use the "DCI" logo or name in any form of advertisement or
     tradeshow.

          b. Access to IMPACT. Seller must, during reasonable business hours,
     afford to Buyer and authorized representatives of Buyer access to those
     portions of the IMPACT Encore data files that include information both (i)
     gathered prior to the Closing, and (ii) relating to the Product Line.

          c. Marketing/Sales Representatives. Seller will assign to Buyer and
     cooperate with Buyer's effort to transfer to Buyer any rights Seller may
     have with respect to the contracts by and between the sales representatives
     selling the Product Line (the "Representatives") and Seller. Seller will
     only pay commissions to the Representatives for established
     contracts on Product Line products shipped by Seller. Except for sales of
     the Series 1093 Heat Bonders, all commissions earned for Product Line sales
     by former employees of Seller will cease to accrue on the date of this
     Agreement. Any sales

     commissions relating to the Series 1093 Heat Bonders will continue to
     accrue pursuant to the terms of any original severance agreement.

          d. Warranty Work. Except as set forth in (e) below, Buyer hereby
     assumes all warranty liability, including any repair and calibration
     liability, resulting from the remaining period on the standard twelve (12)
     month warranty given in conjunction with the sale of any products included
     in the Product Line. Buyer will not be responsible for granting any credits
     on any products included in the Product Line that are sold prior to the
     Closing and subsequently returned for credit. However, if at any time
     Seller needs components to service or repair any products it has accepted
     back from a Product Line customer, Buyer will provide available components
     from initial inventory to Seller at no charge.

          e. Seller's Obligation for Returned Products. Although, Seller is
     under no obligation to grant credit, or any other favorable accommodation
     to Product Line customers for any products sold by it, any products
     returned to Seller for credit will be the property of Seller. Seller will
     communicate customer requests for credit, or any other accommodation, to
     Buyer in order to provide Buyer an opportunity to build customer
     relationships. Notwithstanding the obligation of Buyer set forth in
     subsection (d) above, and except for problems arising from incorrect
     specification or unsuitability for use due to errant technical sales
     activity, Seller will retain responsibility for defects in workmanship,
     materials and design performance for a period of twelve (12) months from
     the Closing Date for the following programs:

                    (i) University of Alabama at Birmingham P.O. #523581 (Seller
               Sales Order #32023),

                    (ii) ADI Limited P.O. #FF0742 (Seller Sales Order #31830)

                    (ii) Bussman products associated with DCI RMA #1281.

          f. Software Licenses for MAS90. Buyer will acquire all licenses and
     pay all fees required for the transfer of the software for the MAS90
     accounting system.

          g. Seller's Obligation for Transition period remittances, etc. For a
     period of two (2) years, Seller shall refer to Buyer all calls, faxes, and
     e-mails received by Seller regarding the Product Line or related services.
     Furthermore, Seller shall deliver to Buyer any correspondence and/or
     remittances incorrectly received by Seller on a weekly basis.

          h. Buyer's Obligation for Transition period remittances, etc. For a
     period of two (2) years, Buyer shall refer to Seller all calls, faxes, and
     e-mails received by Buyer for Seller's products and services. Furthermore,
     Buyer shall deliver to Seller any correspondence and/or remittances
     incorrectly received by Buyer on a weekly basis.

          i. Transition Period Shipping and Accounts Receivable. Seller shall
     continue shipping customer orders relating to the Product Line on schedule
     until Buyer assumes responsibility for delivery at a mutually agreed upon
     date. Furthermore, all accounts receivable derived from shipments made by
     Seller shall be the sole property of Seller.

          j. Seller's Existing Purchase Orders to Vendors. Upon Buyer's request,
     Seller will cancel, or transfer to Buyer, any existing purchase orders
     relating to the Product Line and for which the ordered material has not yet
     been received by Seller. Furthermore, any accounts payable derived from
     Product Line materials received by Seller after the Closing will be the
     sole responsibility of the Buyer.

          k. Use of phone numbers (913) 782-5672 and (913) 782-5766. Buyer will
     pay all fees associated with the transfer of the phone numbers (913)
     782-5672 and (913) 782-5766. The foregoing numbers will be transferred from
     Seller to Buyer promptly following the Closing.

          l. Use of Seller's P.O. Box (P.O. Box 2877). Buyer will pay all fees
     associated with the transfer of the P.O. Box 2877. Such P.O. Box will be
     transferred by the Seller to the Buyer promptly following the Closing.

          m. Health Insurance. Seller and Buyer's Stockholders acknowledge that
     the Buyer's Stockholders are currently covered under Seller's family health
     insurance plan pursuant to an agreement previously entered with Seller or
     its Stockholders. That prior commitment related to health insurance is
     hereby terminated. The Buyer's Stockholders are electing today to obtain
     COBRA coverage under that plan, effective February 1, 2002, and Seller
     acknowledges its commitment to permit the Buyer's Stockholders to maintain
     coverage for eighteen months from February 1, 2002. During that period,
     Seller shall pay 73% of family coverage for each of Buyer's Stockholders.

          n. Limitations on Other Debt. As long as the New Note remains unpaid
     and outstanding, Seller shall not incur debt for borrowed money except the
     following:

                  (i) borrowed money from a commercial bank; and

                  (ii) currently outstanding subordinated debt; and

                  (iii) borrowed money from a source other than (i) and (ii)
         above in an aggregate amount not to exceed $1,000,000.00 provided such
         indebtedness is (i) pari passu in all respects with the New Note and
         (ii) subordinated to any debt incurred under Section 8.1 n(i) above.

8.2      AMENDMENT TO NON-COMPETE AGREEMENTS

         The Buyer's Stockholders entered into agreements with the Seller or the
sole stockholder of the Seller that included non-compete provisions (the
"Non-Compete Agreements"). In order

to operate the Product Line business acquired pursuant to this Agreement, the
following provisions of the Non-Compete Agreements are amended to provide as
follows:

     a. Section 1.1 of the Noncompetition And Nondisclosure Agreement dated
February 7, 2000, by and between Airport Systems International, Inc., a Kansas
corporation, and William D. Cook is amended to read as follows:

          1.1 Scope. Cook covenants and agrees that commencing today and
     continuing for a period of two years from and after the date of this
     Agreement, Cook will not, anywhere in the world, directly or indirectly,
     without the express prior written permission of the Company:

               (a) Other than Design Concepts, Inc. or any entity (i) wholly
          owned by Cook, Larry C. Klusman, or Chris I. Hammond and (ii) that
          conducts business related to the product line acquired from the
          Company, own, have any interest in, or be, serve, or act as an
          individual proprietor, partner, agent, stockholder, officer, employee,
          consultant, director, joint venturer, investor (other than as an
          investor holding less than three percent of the stock of a public
          company), lender, or in any other capacity whatsoever of or with, or
          assist in any way, any person, corporation, partnership, firm, or
          business enterprise (other than the Company or a subsidiary or
          affiliate of the Company) which is in direct or indirect competition
          with the business as carried on by DCI on the date first preceding the
          date hereof.

               (b) Section 7.1 of the Employment Agreement dated February 7,
          2000, by and between DCI, Inc. and Larry C. Klusman:

          7.1 Scope. Employee covenants and agrees that commencing today and
     continuing for a period of three years from and after the date of
     termination of his employment by the Company, Employee will not, anywhere
     in the world, directly or indirectly, without the express prior written
     permission of the Company:

               (a) Other than Design Concepts, Inc. or any entity (i) wholly
          owned by the Employee, William D. Cook, or Chris I. Hammond and (ii)
          that conducts business related to the product line acquired from the
          Company, own, have any interest in, or be, serve, or act as an
          individual proprietor, partner, agent, stockholder, officer, employee,
          consultant, director, joint venturer, investor (other than as an
          investor holding less than three percent of the stock of a public
          company), lender, or in any other capacity whatsoever of or with, or
          assist in any way, any person, corporation, partnership, firm, or
          business enterprise (other than ASII or the Company or a subsidiary or
          affiliate of either) which is in direct or indirect competition with
          the business as carried on by ASII or the Company on the date first
          preceding the date hereof.

               (c) Section 7.1 of the Employment Agreement dated February 7,
          2000, by and between DCI, Inc. and Chris I. Hammond:

               7.1 Scope. Employee covenants and agrees that commencing today
          and continuing for a period of three years from and after the date of
          termination of his employment by the Company, Employee will not,
          anywhere in the world, directly or indirectly, without the express
          prior written permission of the Company:

               (a) Other than Design Concepts, Inc. or any entity (i) wholly
          owned by the Employee, William D. Cook, or Larry C. Klusman and (ii)
          that conducts business related to the product line acquired from the
          Company, own, have any interest in, or be, serve, or act as an
          individual proprietor, partner, agent, stockholder, officer, employee,
          consultant, director, joint venturer, investor (other than as an
          investor holding less than three percent of the stock of a public
          company), lender, or in any other capacity whatsoever of or with, or
          assist in any way, any person, corporation, partnership, firm, or
          business enterprise (other than ASII or the Company or a subsidiary or
          affiliate of either) which is in direct or indirect competition with
          the business as carried on by ASII or the Company on the date first
          preceding the date hereof.

     8.3 SELLER'S RELEASE. The Buyer's Stockholders and all of their agents,
affiliates, and representatives, jointly and severally, hereby release, acquit
and forever discharge Seller, all of its present and past partners, associates,
employees, agents or affiliates and its sole stockholder, all of its present and
past partners, associates, employees, agents or affiliates (collectively, the
"Releasees") from any and all manner of action or actions, cause or causes of
action, cross-claims or counter-claims, in law or in equity, suits, claims,
demands, damages, loss, costs or expenses, of any nature whatsoever, known or
unknown, fixed or contingent, whether or not ascertainable at the time of
execution of this Agreement, and whether or not based upon common law or any
federal or state statute, which the Buyer's Stockholders now have or may
hereafter have against each or any of the Releasees, by reason of any matter,
cause, or thing whatsoever, arising in connection with the Old Note, the Asset
Purchase Agreement between Seller, KHC of Lenexa, LLC, and the Buyer's
Stockholders (the "Asset Purchase Agreement"), or the Stock Purchase Agreement
dated as of January 10, 2000, by and among Airport Systems International, Inc.,
the Buyer (the "Stock Purchase Agreement") and any matters affecting the Old
Note, the Asset Purchase Agreement, or the Stock Purchase Agreement.

     8.4 BUYER'S STOCKHOLDERS'S RELEASE. Seller and all of its agents,
affiliates, and representatives, jointly and severally, hereby release, acquit
and forever discharge Buyer's Stockholders, all of their present and past
partners, associates, employees, agents or affiliates (the "Releasees") from any
and all manner of action or actions, cause or causes of action, cross-claims or
counter-claims, in law or in equity, suits, claims, demands, damages, loss,
costs or expenses, of any nature whatsoever, known or unknown, fixed or
contingent, whether or not ascertainable at the time of execution of this
Agreement, and whether or not based upon

common law or any federal or state statute, which Seller now has or may
hereafter have against each or any of the Releasees, by reason of any matter,
cause, or thing whatsoever, arising in connection with the Old Note, the Asset
Purchase Agreement, or the Stock Purchase Agreement and any matters affecting
the Old Note, the Asset Purchase Agreement, or the Stock Purchase Agreement.

                                   ARTICLE IX
                                  MISCELLANEOUS

     9.1 EXPENSES. Each party to this Agreement shall pay its own expenses
incidental to the negotiation, preparation, execution and performance of this
Agreement and the transactions contemplated hereby, including, but not limited
to, the fees and expenses of their respective legal counsel, brokers and
accountants. Seller shall pay any sales, use or transfer taxes or fees in
connection with the transactions contemplated hereby.

     9.2 NEWS RELEASE. The parties agree that they will cooperate with each
other in the preparation of a joint news release announcing the transactions
contemplated by this Agreement.

     9.3 NOTICES. Any notice or demand desired or required to be given hereunder
shall be in writing and deemed given when personally delivered or three (3) days
after it is deposited in the United States mail, postage prepaid, sent certified
or registered and addressed as follows:

               a. If to Seller, to:

                           DCI, Inc.
                           15301 W.  109th Street
                           Lenexa, Kansas 66215
                           Attention: Michael J. Meyer
                           Fax Number: (913) 982-5766

               b. If to Buyer, to:

                           Design Concepts, Inc.
                           P.O Box 2877
                           Olathe, Kansas 66062

or to such other address or person as hereafter shall be designated in writing
by the applicable party.

     9.4 ENTIRE AGREEMENT. This Agreement and the exhibits and schedules hereto
constitute the entire agreement between the parties hereto pertaining to the
subject matters hereof, an supersede all negotiations, preliminary agreements
and all prior and contemporaneous

discussions and understandings of the parties in connection with the subject
matters hereof. All exhibits and schedules hereto are hereby incorporated into
and made a part of this Agreement.

     9.5 AMENDMENTS. No amendment, waiver, change or modification of any of the
terms, provisions or conditions of this Agreement shall be effective unless made
in writing and signed or initialed by the parties or by their duly authorized
agents. Waiver of any provision of this Agreement shall not be deemed a waiver
of future compliance therewith and such provision shall remain in full force and
effect.

     9.6 SEVERABILITY. In the event any provision of this Agreement is held
invalid, illegal or unenforceable, in whole or in part, the remaining provisions
of this Agreement shall not be affected thereby and shall continue to be valid
and enforceable, and, if, for any reason, a court finds that any provision of
this Agreement is invalid, illegal or unenforceable as written, but that by
limiting such provision it would become valid, legal and enforceable, then such
provision shall be deemed to be written and shall be construed and enforced as
so limited.

     9.7 GOVERNING LAW. This Agreement shall be governed by and construed in
accordance with the laws of the State of Kansas.

     9.8 HEADINGS AND CAPTIONS. The titles or captions of paragraphs in this
Agreement are provided for convenience of reference only, and shall not be
considered a part hereof for purposes of interpreting or applying this
Agreement, and such titles or captions do not define, limit, extend, explain or
describe the scope or extent of this Agreement or any of its terms or
conditions.

     9.9 GENDER AND NUMBER. Words and phrases herein shall be construed as in
the singular or plural number and as masculine, feminine or neuter gender,
according to the context.

     9.10 COUNTERPARTS. This Agreement may be executed in any number of
counterparts, each of which shall be deemed to be an original, but all of which
together shall constitute one and the same instrument, and in making proof
hereof, it shall not be necessary to produce or account for more than one such
counterpart.

     9.11 BINDING EFFECT ON SUCCESSORS AND ASSIGNS. This Agreement shall be
binding upon and shall inure to the benefit of the parties hereto and their
respective legal representatives, heirs, successors and assigns; provided,
however, none of the parties to this Agreement may assign their rights or
obligations hereunder without the prior written consent of the other parties,
which consent shall not be unreasonably withheld, and in the event of any such
assignment, all of the terms, covenants, agreements and conditions of this
Agreement shall continue to be in full force and effect and the parties hereto
shall continue to remain respectively liable and responsible for the due
performance of all of the terms, covenants, agreements and conditions of this
Agreement which they are respectively obligated to observe and perform. Nothing
in this Agreement, express or implied, is intended to confer upon any party,
other than

the parties hereto (and their respective legal representatives, heirs,
successors and assigns), any rights, remedies, obligations or liabilities.

         IN WITNESS WHEREOF, the parties hereto have executed this Agreement on
the date first above written.

DCI, INC.                                      DESIGN CONCEPTS, INC.

BY:                                             BY:
   ----------------------------------               --------------------------------------------

NAME:                                           NAME:
       ------------------------------                 ------------------------------------------

TITLE:                                          TITLE:
       ------------------------------                 ------------------------------------------

                                                ------------------------------------------------
                                                Chris I. Hammond

                                                ------------------------------------------------
                                                William D. Cook

                                                -------------------------------------------------
                                                Larry C. Klusman

                         SCHEDULE A--PRODUCTS AND MODELS

Includes all Models, Options and Modifications (Specials) for the following:

Series            Function

200               Voltmeters
300               Comparators
400               Clocks
500               Comparators
700               Counters
800               Counters/Timers
900               Remotes
1000              Remotes and Custom Meters
2000              Meters
2600              Process Meters

2700              Voltmeters
2900              Counters/Timers
6100              Counters/Timers
7000              Meters
7600              Strain Gage Meters
7700              Voltmeters
8000              Counters/Timers/Clocks
9000              Process Meters
PPI100            Pressure Readouts

All Velenex Equivalent Meters

                              SCHEDULE B--INVENTORY

         1)       Inventory Used Non-Exclusively On Instruments Products

         2)       Inventory Valuation Report for INST Product Class

                          SCHEDULE C--EXCESS INVENTORY

1) Non-Moving Inventory, the value of which was agreed upon by Buyer and Seller
on 1/7/02.

                             SCHEDULE D--EQUIPMENT

Instrument Product Line Associated Equipment Assets                                                                        1/29/2002

Item                                                                        Acquired Value         Depreciation           Book Value                                      # of Months
-------------------------------------------------------------------------------------------------------------------------------------
                                                                                                                                                                                    24
Tapmatic Model 30X Auto Tapping Attachment                                               0                    0                    0
Di-Acro No. 2 Hand Punch                                                               350                 -140                  210
Di-Acro Model 24HS Hand Shear                                                          425                 -170                  255
Di-Acro No. 4 Hand Brake                                                                 0                    0                    0
Pexto No. 137-J Foot Shear                                                           1,500                 -600                  900
Baldor No. 2048 Belt Grinder                                                           500                 -200                  300
Makita Model LS1013 Mitre Saw w/ Fixtures                                              150                  -60                   90
Instrument Test Stand                                                                    0                    0                    0
Stag Model PP28 EPROM Programmer                                                         0                    0                    0
Modular Circuit Technologies EPROM Programmer                                            0                    0                    0
Starrett No. 716 Micrometer & LVDT Tester                                                0                    0                    0
DCI Model 1001 Time Standard                                                             0                    0                    0
1 Model 5100B Fluke Calibrator                                                         550                 -220                  330
1 Model 341A Fluke Calibrator                                                        1,050                 -420                  630
All Required Test Software                                                               0                    0                    0
Miscellaneous Custom Fixtures                                                            0                    0                    0
Quad Model 100 P&P with 4 inoperative feeders included                              16,500               -6,600                9,900
Assembly Fixtures, Jigs and Samples                                                      0                    0                    0
2 Worktables                                                                             0                    0                    0
Microprocessor Emulators and Software - Instrument                                       0                    0                    0
Tango CAD Software - TBD to license and register                                         0                    0                    0
Fax Machine - Surplus unit requires repair                                               0                    0                    0
Silkscreens for Lens Backplates                                                          0                    0                    0
Solder Paste Stencils for PC Boards                                                      0                    0                    0
Instrument Trade Show Demo Equipment                                                     0                    0                    0
Carlson System Strapper (Yellow Banding Machine)                                       750                 -300                  450
Tape Machine - DCI's #3 unit, not currently in use                                       0                    0                    0
                                                                                                                                   0
                                                                      ---------------------------------------------------------------
                                                                                   $21,775              -$8,710              $13,065

                          SCHEDULE E--ASSUMED CONTRACTS
         DCI Instrument Product Line Sales Representative Organizations
                          with Contracts to be assigned

Brett Associates                                        L-Tron
201 S.W. 153rd, Suite B                                 1169 Pittsford-Victor Road, Suite 120
Seattle, WA  98166-2313                                 Pittsford, NY  14534

Jim Smith & Associates, Inc.                            RG Associates
6822 Academy Pkwy West                                  184 Foster Street
Albuquerque, NM  87109                                  Lowell, MA  01851

Instrumentation Resources, Inc.                         Analectro
11900 Wayzata Blvd., Suite 226                          1950 Old Cuthbert Road, Suite K
Minnetonka, MN 55305                                    Cherry Hill, NJ  08034

Vertec Associates, Inc.                                 CP&F-Atlantic
410 Sovereign Court, Suite 7                            1 Centerview Drive, Suite 306
Manchester, MO  63011                                   Greensboro, NC  27407

Kemp Instruments, Inc.                                  CP&F-Dixie
1201 Richardson Drive, Suite 160                        2317 Starmount Circle
Richardson, TX  75080                                   Huntsville, AL  35807

Precision Measurement Products                          Techno-Data Co., Ltd.
510 Market Loop, Suite 202                              Yoido PO Box 529
West Dundee, IL  60118                                  Seoul, Korea 150-605

Saber Enterprises                                       Complete International Solutions
2760 East Spring Street, Suite 210                      2 North Meadows
Long Beach, CA  90806                                   Woodbury, CT  06798Promissory Note for DCI, Inc. Exhibit 10.2

                                                        Exhibit 10.2

                                 PROMISSORY NOTE

$410,625.00

                                                           February 1, 2002

         FOR VALUE RECEIVED, DCI, INC., a Kansas corporation (the "Maker"),
hereby promises to pay to the order of CHRIS I. HAMMOND, LARRY C. KLUSMAN AND
WILLIAM D. COOK (together with their assigns, collectively the "Holders"), the
principal sum of Four Hundred Ten Thousand Six Hundred and Twenty-Five Dollars
($410,625.00), together with interest at a fixed rate of 10% per annum, with
such interest payable quarterly commencing April 30, 2002 and continuing on the
last day of July, October, January, and April until maturity, and such principal
payable in a single installment on February 7, 2005 (the "Promissory Note").
Elecsys Corporation is a party hereto exclusively for purposes of honoring the
conversion obligations set forth herein.

         Interest shall be computed on the basis of a 360-day year. If any
installment of this Promissory Note becomes due and payable on a Saturday,
Sunday or business holiday in the State of Kansas, payment shall be made no
later than the next successive business day with the same effect as though made
on the due date. Upon the occurrence of an Event of Default, as defined below,
this Promissory Note shall accrue interest at a rate of 12% per annum until the
first to occur of the date this Promissory Note is paid in full or the Event of
Default is cured.

         The Maker reserves the right to prepay all or any portion of this
Promissory Note at any time and from time to time without premium or penalty of
any kind. The Maker shall provide the Holders written notice of its intention to
prepay all or any portion of this Promissory Note and shall afford the Holders a
two (2) week period from the date on which the notice of intention to prepay is
received to elect to convert such prepayment amount in accordance with the
provisions of this Promissory Note. The failure of the Holder or Holders, as the
case may be, to provide a Conversion Notice, as defined herein, within the two
(2) week period shall constitute acceptance of the right of the Maker to prepay.

         If any of the events specified below shall occur (herein individually
referred to as an "Event of Default"), and in each such event, the Holders may,
at their collective option, by notice in writing to the Maker, declare the
remaining unpaid principal balance of this Promissory Note and all accrued
interest thereon immediately due and payable in full. Such written declaration
shall require the signature of at least one of the Holders as representative of
all Holders, or their successors or assigns, in order to be effective. For
purposes of this paragraph, and until such time that the Holders collectively
change this designation, Chris I. Hammond shall serve as representative of the
Holders. Each of the following shall be an "Event of Default" under this
Promissory Note:

     (a)  a default in the payment of interest or principal due hereunder; or

     (b)  the Maker or any other person liable hereon should make an assignment
          for the benefit of creditors; or

     (c)  attachment or garnishment proceedings are commenced against the Maker
          or any other person liable hereon; or

     (d)  a receiver, trustee or liquidator is appointed over or execution
          levied upon any property of the Maker; or

     (e)  proceedings are instituted by or against the Maker, or any other
          person liable hereon under any bankruptcy, insolvency, reorganization
          or other law relating to the relief of debtors, including without
          limitation the United States Bankruptcy Code, as amended; or

     (f)  the Maker liquidates or dissolves; or

     (g)  a Change of Control (as defined below) of the Maker.

         The term "Change of Control" as used in this Paragraph shall mean the
occurrence of any of the following: (i) any "person" (as such term is defined in
Sections 13(d) or 14(d)(2) of the Securities Exchange Act of 1934 (the "Exchange
Act")) shall be or become the "beneficial owner" (as described in Rule 13d-3
under the Exchange Act), directly or indirectly, of securities representing 50%
or more of the combined voting power of the Maker; (ii) the Maker shall merge,
consolidate, or enter into any other transaction resulting in the dissolution or
liquidation of the Maker; (iii) a change in the composition of the Board of
Directors of the Maker over a two-year period resulting in a majority of the
Directors at the beginning of such two-year period being removed, resigning or
being replaced by individuals not nominated or appointed by a majority of the
individuals who were Directors at the beginning of such two-year period; or (iv)
the Maker experiences any other event that would be required to be reported in
response to Item 6(e) of Schedule 14A of Regulation 14A under the Exchange Act.

         All payments made hereunder shall be made in lawful currency of the
United States of America in immediately available funds. Each principal and
interest payment from Maker to Holders, unless otherwise agreed to, shall be
divided equally by Maker among the Holders and each Holder shall receive his
respective payment from Maker at his address as follows:

Larry C. Klusman             Chris I. Hammond             William D. Cook
9011 Greenway Lane           12620 S. Hallet              12913 W. 78th Street
Lenexa, KS  66215            Olathe, KS  66062            Lenexa, KS  66216

or at such other place, or to such bank account, as the individual Holder may
designate in writing. All payments made hereunder, whether a scheduled
installment, prepayment, or payment as a result of acceleration, shall be
allocated first to accrued but unpaid interest and then to principal remaining
outstanding hereunder.

         This Promissory Note shall be governed by and construed and enforced in
accordance with the laws of the State of Kansas, without regard to conflict of
laws principles.

         The Holders shall collectively or individually have the right at any
time during usual business hours on or before the close of business on or prior
to February 7, 2005, to convert the principal, accrued interest and/or any
proposed prepayment amount of this Promissory Note or

any portion of the principal, accrued interest and/or any proposed prepayment
amount thereof into shares of Common Stock of Elecsys Corporation (the
"Company"), at a conversion price equal to $1.93 aggregate principal, accrued
interest or proposed prepayment amount, as the case may be, for each share of
common stock of Elecsys (the "Common Stock") or, in case an adjustment of such
price has taken place pursuant to the provisions of this Promissory Note, then
at the price as last adjusted (referred to herein as the "Conversion Price"),
upon surrender of this Promissory Note to the Company at its office in Lenexa,
Kansas with a conversion notice executed by the Holder or Holders, as the case
may be, (hereinafter referred to as the "Conversion Notice") evidencing the
Holder's intention to convert this Promissory Note or a specified portion (as
above provided) hereof, specifying the name in which the shares of Common Stock
deliverable upon such conversion shall be registered, with the address of the
person (and taxpayer identification numbers, if applicable) so named, and, if so
required by the Company, accompanied by a written instrument or instruments of
transfer in form satisfactory to the Company duly executed by the Holder or
Holders, as the case may be, duly authorized in writing. For convenience, the
conversion of the principal, accrued interest or any proposed prepayment amount
of this Promissory Note into Common Stock is herein sometimes referred to as the
"conversion" of this Promissory Note. Notwithstanding anything to the contrary,
the Holders shall not be entitled to make a partial conversion of this
Promissory Note unless such partial conversion results in the issuance of no
less than 10,000 shares of Common Stock of the Company to the Holders
collectively.

         As promptly as practicable after the surrender, as herein provided, of
this Promissory Note for conversion and the receipt of the Conversion Notice, as
herein provided, relating thereto, and, if applicable, the payment of the funds
provided for below, the Company shall deliver or cause to be delivered at said
office or agency, to or upon the written order of the Holder or Holders, a
certificate representing the number of fully-paid and non-assessable shares of
Common Stock into which this Promissory Note may be converted in accordance with
the provisions hereof, registered in such name as is specified in the Conversion
Notice, together with any cash payable in respect of a fractional share. In case
this Promissory Note shall be surrendered for partial conversion, the Maker
shall execute and deliver to or upon the written order of the Holder or Holders,
without charge to the Holder or Holders (subject to the provisions hereof), a
new Promissory Note in an aggregate principal amount equal to the unconverted
portion of the surrendered Promissory Note. Subject to the following provisions
of this paragraph, such conversion shall be deemed to have been effected at the
close of business on the date when this Promissory Note shall have been
surrendered for conversion together with the Conversion Notice and any funds
required by other provisions hereof (the date of the last of such events to
occur is sometimes referred to hereinafter as the "Conversion Date"), so that
the rights of the Holders as such Holders shall cease at such time and the
person entitled to receive the shares of Common Stock upon conversion of this
Promissory Note shall be treated for all purposes as having become the record
holder of such shares of Common Stock at such time and such conversion shall be
at the Conversion Price in effect at such time; provided, however, that no such
surrender on any date when the stock transfer books of the Company shall be
closed shall be effective to constitute the person entitled to receive the
shares of Common Stock upon such conversion as the record holder of such shares
of Common Stock of such date, but such surrender shall be effective to
constitute the person entitled to receive such shares of Common Stock as the
record holder thereof for all purposes at the opening of business on the next
succeeding business day on which such stock transfer books are open.

         If the last day for the exercise of the conversion right at the place
of surrender shall not be a business day, then the last day for the exercise of
such right at such place shall be the next succeeding business day.

         No payment or adjustment shall be made upon any conversion in respect
of any dividends on the Common Stock delivered upon conversion which were
declared for payment to holders of Common Stock of record as of a date prior to
the Conversion Date.

         The Conversion Price shall be subject to adjustment as follows:

         In case the Company shall (i) pay a dividend in shares of its capital
stock, (ii) subdivide its outstanding shares of Common Stock, (iii) combine its
outstanding shares of Common Stock into a smaller number of shares, or (iv)
issue by reclassification of its shares of Common Stock any shares of the
Company, the Conversion Price in effect immediately prior thereto shall be
adjusted so that the holder of this Promissory Note thereafter surrendered for
conversion shall be entitled to receive the number of shares of the Company
which he would have owned or have been entitled to receive after the happening
of any of the events described above, had this Promissory Note been converted
immediately prior to the happening of such event. An adjustment made pursuant to
this paragraph shall become effective immediately after the record date in the
case of a dividend and shall become effective immediately after the effective
date in the case of a subdivision, combination or reclassification.

         In case the Company shall issue Additional Shares of Common Stock at a
price per share of Common Stock less than the current conversion price in effect
on the date of and immediately prior to such issue, then, and in such event, the
price per share at which this Promissory Note may thereafter be converted into
Common Stock shall be determined by dividing the price per share for which this
Promissory Note was theretofore convertible into Common Stock by a fraction of
which the numerator shall be the number of shares of Common Stock outstanding on
the date of issuance of such Additional Shares of Common Stock plus the number
of Additional Shares of Common Stock offered for subscription or purchase, and
of which the denominator shall be the number of shares of Common Stock
outstanding on the date of issuance of such Additional Shares of Common Stock
plus the number of shares which the aggregate offering consideration of the
total number of Additional Shares of Common Stock so offered would purchase at
such current Conversion Price. Such adjustments shall be made whenever such
Additional Shares of Common Stock are issued. For the purpose of this paragraph,
the term "Additional Shares of Common Stock" shall mean all shares of Common
Stock, plus rights, options or warrants to subscribe for, purchase or otherwise
acquire shares of Common Stock, or securities convertible or exchangeable into
shares of Common Stock; provided, however, that such term shall not mean: (i)
stock awards, rights, options or warrants granted to directors, management or
employees of the Company pursuant to any director, management or employee plans
approved by the Board of Directors of the Company, or (ii) any shares of Common
Stock or any security convertible into, exchangeable or redeemable for, or
otherwise granting the holder thereof the right to acquire shares of Common
Stock and that is issued as part of any acquisition of any of the stock or
assets of LCD Systems, Inc. prior to twelve months from the date hereof.

         In case the Company shall distribute to all holders of its Common Stock
evidences of its indebtedness or assets (excluding cash dividends or other cash
distributions) or rights or warrants to subscribe (excluding those referred to
in the preceding paragraph and other than pursuant to a shareholder's rights
plan) for shares of Common Stock, then in each such case the price per share at
which this Promissory Note may thereafter be converted into Common Stock shall
be determined by dividing the price per share for which this Promissory Note was
theretofore convertible into Common Stock by a fraction, of which the numerator
shall be the current market price per share of Common Stock (as defined in the
following paragraph) on the date of such distribution and of which the
denominator shall be such current market price per share of the Common Stock,
less the then fair market value (as determined by the Board of Directors of the
Company, whose determination shall be conclusive, and described in a statement
provided to the Holders of this Promissory Note) of the portion of the assets or
evidences of indebtedness so distributed or of such subscription rights or
warrants applicable to one share of the Common Stock. Such adjustment shall be
made whenever any such distribution is made and shall become effective
retroactively immediately after the record date for the determination of
stockholders entitled to receive such distribution.

         For the purpose of any computation under the preceding paragraph,
subsection (c) above, the current market price per share of Common Stock at any
date shall be deemed to be the average of the daily closing prices for the 30
consecutive trading days commencing 45 trading days before the day in question.

         For the purposes of this Promissory Note, any change solely in the par
value of the Common Stock or from par value to no par value or from no par value
to par value of such stock, shall not be deemed to be a reclassification or
recapitalization.

         No fractional shares or script representing fractional shares shall be
issued upon the conversion of this Promissory Note. If any fractional interest
in a share of Common Stock would, except for the provisions of this paragraph,
be deliverable upon the conversion of this Promissory Note, the Company shall,
in lieu of delivering a fractional share therefor, adjust such fractional
interest by paying the Holders an amount in cash equal (computed to the nearest
cent) to the closing price of such fractional interest on the trading day next
preceding the date of conversion.

         In case of any capital reorganization, or of any reclassification of
the Common Stock (other than a reclassification covered above), of the Company
or in case of the merger of the Company into any other corporation, or of any
transfer of the properties and assets of the Company as, or substantially as, an
entirety to any other corporation, there shall be no adjustment of the
Conversion Price hereof, but this Promissory Note shall, after such capital
reorganization, reclassification of Common Stock, merger or transfer, be
convertible into the kind and amount of shares of stock or other securities or
property (including cash) to which the holder of the number of shares of Common
Stock deliverable (immediately prior to the time of such capital reorganization,
reclassification of Common Stock, merger or transfer) upon conversion of this
Promissory Note would have been entitled upon such capital reorganization,
reclassification of Common Stock, merger, or transfer; and in any case, if
necessary, appropriate adjustment shall be made in the application of the
provisions set forth herein with respect to the rights and interests thereafter
of the Holders of this Promissory Note, to the end that the

provisions set forth herein shall thereafter correspondingly be made applicable,
as nearly as may reasonably be, in relation to any shares of stock or other
securities or property (including cash) thereafter deliverable on the conversion
of this Promissory Note. Any such adjustment shall be confirmed as being
accurately determined by a certificate of a firm of independent public
accountants; and any adjustment so approved shall for all purposes hereof
conclusively be deemed to be an appropriate adjustment. The above provisions of
this paragraph shall similarly apply to successive reorganizations,
reclassifications, mergers, or transfers.

         Whenever the Conversion Price is adjusted as herein provided, the
Company shall promptly provide the Holders a certificate of a firm of
independent public accountants with respect thereto setting forth the Conversion
Price after such adjustment and setting forth a brief statement of the facts
requiring such adjustment and the effective date thereof.

         The Company shall also forthwith cause to be mailed to the Holders a
notice stating that the Conversion Price has been adjusted and setting forth the
adjusted Conversion Price.

         In case:

               (1) the Company shall declare a dividend payable, or shall make
          any other distribution of its Common Stock (excluding cash dividends
          or other cash distributions); or

               (2) the Company shall authorize the granting to all the holders
          of its Common Stock of rights or warrants to subscribe for or purchase
          any shares of stock of any class or of any other rights or warrants;
          or

               (3) of any capital reorganization or reclassification of the
          Common Stock of the Company (other than a subdivision or combination
          or change in the par value of its outstanding Common Stock), or of any
          merger to which the Company is a party and for which approval of any
          stockholders of the Company is required, or of any transfer of all or
          substantially all of the assets of the Company, in the event any such
          merger or transfer will result in a change in the shares held by the
          holders of Common Stock; or

               (4) of the voluntary or involuntary dissolution, liquidation or
          winding-up of the Company;

then the Company shall cause to be mailed to the Holders, as promptly as
practicable but in any event at least 10 days prior to the applicable record
date, entitlement date or effective date hereinafter specified, a notice stating
(x) the date on which a record is to be taken for the purpose of such dividend,
distribution or granting of rights (the "record date"), or, if a record is not
to be taken, the date or anticipated date as of which the holders of Common
Stock of record to be entitled to such dividend, distribution or granting of
rights are to be determined (the "entitlement date"), or (y) the date or
anticipated date on which such capital reorganization, reclassification, merger,
transfer, dissolution, liquidation or winding-up is expected to become effective
(the "effective date"), and which notice, in the case of the notice specified in
clause (y), shall also state the date as of which it is expected that holders of
Common Stock of record shall be entitled to exchange their shares of Common
Stock for securities or other property deliverable upon such capital
reorganization, reclassification, merger, transfer, dissolution, liquidation or
winding-up.

         The Company covenants that it will at all times reserve and keep
available, free from pre-emptive rights, out of the aggregate of its authorized
but unissued Common Stock or its issued Common Stock held in its treasury, or
both, for the purpose of effecting conversions of this Promissory Note, the full
number of shares of Common Stock then deliverable upon the conversion of this
Promissory Note; and if at any time the number of authorized but unissued shares
of Common Stock shall not be sufficient to effect the conversion of this
Promissory Note, the Company will take such corporate action as may in the
opinion of its counsel be necessary to increase its authorized but unissued
Common Stock to such number of shares as shall be sufficient for that purpose.

         Before taking any action that would cause an adjustment reducing the
Conversion Price below the then par value (if any) of the shares of Common Stock
issuable upon conversion of this Promissory Note, the Company will take any
corporate action that may, in the opinion of its counsel, be necessary in order
that the Company may validly and legally issue fully paid and nonassessable
shares of such Common Stock at such adjusted Conversion Price.

         The Company covenants that if any shares of Common Stock reserved for
conversion of this Promissory Note require listing upon any national securities
exchange before such shares may be delivered upon conversion, the Company will
in good faith, and as expeditiously as possible, endeavor to cause such shares
to be duly listed.

         The Company will pay any and all documentary, stamp or similar issue or
transfer taxes payable in respect of the issue or delivery of shares of Common
Stock on conversion of this Promissory Note pursuant hereto; provided, however,
that the Company shall not be required to pay any tax which may be payable in
respect of any registration of transfer involved in the issue or delivery of
Common Stock in a name other than that of the Holders of this Promissory Note to
be converted, and no such issue or delivery shall be made unless and until the
person requesting such issue has paid to the Company the amount of any such tax
or has established, to the satisfaction of the Company, that such tax has been
paid.

         This Promissory Note is made pursuant to the terms and provisions of
the Dispute Resolution Agreement, dated as of January 31, 2002 to which Maker
and Holder are parties.

         As long as this Promissory Note remains unpaid and outstanding, Maker
shall not incur debt for borrowed money except the following:

                  (i) borrowed money from a commercial bank; and

                  (ii) currently outstanding subordinated debt; and

                  (iii) borrowed money from a source other than (i) and (ii)
         above in an aggregate amount not to exceed $1,000,000.00 provided such
         indebtedness is (i) pari passu in all respects with this Promissory
         Note and (ii) subordinated to any debt incurred under (i) above.

         The rights and obligations of the Maker, the Company and the Holder
shall be binding upon and inure to the benefit of the permitted successors,
assigns, heirs, administrators

and transferees of the parties. Maker may not assign its rights or obligations
under this Promissory Note without the prior written unanimous consent of the
Holders. Each of the Holders may not assign his individual rights or obligations
under this Promissory Note without the prior consent of the Maker.

         IN WITNESS WHEREOF, the undersigned had duly caused this Promissory
Note to be executed and delivered at the place specified above and as of the
date first written above.

                                    DCI, INC.

                     By:
                          ------------------------------------------------------

                     Name:
                          ------------------------------------------------------

                     Title:
                          ------------------------------------------------------

                     ELECSYS CORPORATION

                     By:
                          ------------------------------------------------------

                     Name:
                          ------------------------------------------------------

                     Title:
                          ------------------------------------------------------

                                 ACKNOWLEDGMENTS

STATE OF MISSOURI                       )
                                        )  ss.
COUNTY OF JACKSON                       )

         On this ____ day of January, 2002, before me,
_______________________________ the undersigned, personally appeared
____________________, known personally to me to be the President of DCI, INC.,
and that he, as such officer, being authorized to do so, executed the foregoing
instrument for the purposes therein contained, by signing the name of the
corporation by himself as such officer.

         IN WITNESS WHEREOF, I have hereunto set my hand and affixed my official
seal on the day and year above written.

                                  -----------------------------------------
                                  Notary Public

My Commission Expires:

STATE OF MISSOURI                       )
                                        )  ss.
COUNTY OF JACKSON                       )

         On this ____ day of January, 2002, before me,
_______________________________ the undersigned, personally appeared
____________________, known personally to me to be the Chairman of ELECSYS
CORPORATION, and that he, as such officer, being authorized to do so, executed
the foregoing instrument for the purposes therein contained, by signing the name
of the corporation by himself as such officer.

         IN WITNESS WHEREOF, I have hereunto set my hand and affixed my official
seal on the day and year above written.

                                  -------------------------------------------
                                  Notary Public

My Commission Expires:

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