PROMISSORY NOTE

$185,000.00                                             Dated: December 31, 2005

      FOR VALUE RECEIVED,  INFINITE GROUP,  INC., a corporation  with offices at
595 Blossom Road, Suite 309, Rochester, NY 14610 14623 (the "Borrower"),  hereby
promises to pay to DAVID N. SLAVNY AND LEAH A. SLAVNY,  individuals  residing at
20  Cobble  Creek  Road,  Victor  NY 14564  (collectively,  the  "Lender"),  the
principal sum of One Hundred Eighty Five Thousand  Dollars  ($185,000.00),  plus
interest  at the annual rate of twelve  percent  (12%),  in lawful  money of the
United States of America.

      Interest  payments  shall be payable on the first day of each month during
the term of this Promissory Note commencing  February 1, 2006, and all principal
and unpaid interest shall be due and payable on January 1, 2008.

      Borrower  shall have the right,  at its option and without prior notice to
Lender,  and  without  penalty,  to  prepay  all or any part of the  outstanding
principal amount of this Note at any time.

      Upon the occurrence of any of the following events of default,  the entire
indebtedness  evidenced by this Note,  including  expenses of collection,  shall
immediately  become due and payable  without  further  notice,  presentation  or
demand:

      (i) The failure to pay a monthly  installment  within ten (10) days of its
due date following the Lender's written notice of default and demand;

      (ii) The  bankruptcy  of Borrower or the filing by Borrower of a voluntary
petition  under  any  provision  of the  bankruptcy  laws;  the  institution  of
bankruptcy  proceedings in any form against Borrower which shall be consented to
or permitted  to remain  undismissed  or unstayed  for ninety (90) days;  or the
making by Borrower of an assignment for the benefit of creditors;

      (iii) The taking of any judgment against  Borrower,  which judgment is not
paid in  accordance  with its  terms,  satisfied,  discharged,  stayed or bonded
within ninety (90) days from the entry thereof; or

      (iv) The  assignment  of this Note by Borrower,  provided,  however,  that
Borrower  may  assign  this  Note to any  person  or entity  that  controls,  is
controlled by or is under common control with, Borrower.

      No failure on the part of Lender to exercise,  and no delay in exercising,
any of the rights provided for herein,  shall operate as a waiver  thereof,  nor
shall any single or partial  exercise by Lender of any right  preclude any other
or future exercise thereof or the exercise of any other right.

      Lender shall not,  without the express prior written  consent of Borrower,
assign, sell, gift or otherwise transfer this Note to any third party, provided,
however, that Lender may assign this Note to any person or entity that controls,
is  controlled  by or is under common  control  with,  Lender  without the prior
consent of Borrower.


<PAGE>

      This  Note is  secured  by in  accordance  with  that  certain  Collateral
Security  Agreement of dated December 31, 2005 by and between the Lender and the
Borrower.

      Borrower  agrees  to pay all  costs  and  expenses  incurred  by Lender in
enforcing this Note,  including without limitation all reasonable attorneys fees
and expenses incurred by Lender.

      This Note shall be governed by and construed in  accordance  with the laws
of the State of New York.

      IN WITNESS  WHEREOF,  Borrower  has caused  this Note to be  executed  and
delivered as of the date set forth above.


                                            INFINITE GROUP, INC.


                                            By: /s/ Michael S. Smith
                                                -----------------------
                                                Michael S. Smith, President