<PAGE>
================================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   FORM 10-K/A
                                 AMENDMENT NO.1

              Annual Report Pursuant to Section 13 or 15(d) of the
                         Securities Exchange Act of 1934

                   FOR THE FISCAL YEAR ENDED DECEMBER 31, 2001

                          Commission file number 1-9330


                         INTELLIGENT SYSTEMS CORPORATION
--------------------------------------------------------------------------------
             (Exact name of Registrant as specified in its charter)


                GEORGIA                                         58-1964787
--------------------------------------------------------------------------------
     (State or other jurisdiction of                          (I.R.S. Employer
      incorporation or organization)                         Identification No.)

4355 SHACKLEFORD ROAD, NORCROSS, GEORGIA                          30093
--------------------------------------------------------------------------------
(Address of principal executive offices)                        (Zip Code)

       Registrant's telephone number, including area code: (770) 381-2900

           SECURITIES REGISTERED PURSUANT TO SECTION 12(B) OF THE ACT:

    TITLE OF EACH CLASS                NAME OF EACH EXCHANGE ON WHICH REGISTERED
    -------------------                -----------------------------------------
COMMON STOCK, $.01 PAR VALUE                        AMERICAN STOCK EXCHANGE

        SECURITIES REGISTERED PURSUANT TO SECTION 12(G) OF THE ACT: None

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the preceding 12 months (or for such shorter period that the registrant was
required to file such reports), and (2) has been subject to such filing
requirements for the past 90 days. Yes [X] No [ ]

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405
of Regulation S-K is not contained herein, and will not be contained, to the
best of registrant's knowledge, in definitive proxy or information statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K. [X]

As of March 15, 2002, 4,495,530 shares of Common Stock were outstanding. The
aggregate market value of the Common Stock held by non-affiliates of the
registrant was $10,483,674 (computed using the closing price of the Common Stock
on March 15, 2002 as reported by the American Stock Exchange).

DOCUMENTS INCORPORATED BY REFERENCE: Portions of the registrant's Proxy
Statement for the Annual Meeting of Shareholders to be held on May 23, 2002, are
incorporated by reference in Part III hereof.

================================================================================
<PAGE>

This Amendment No. 1 to the Form 10-K for the year ended December 31, 2001 is
being filed to correct an error on the cover page of the Form 10-K in the
calculation of the market value of shares held by non-affiliates of the
Registrant. The figure in the Form 10-K filed on March 22, 2002 was $3,494,558
which was the number of shares held by non-affiliates rather than the market
value. The correct figure reflecting the market value of the shares held by
non-affiliates is $10,483,674.

                                   SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange
Act of 1934, the Registrant has duly caused this Annual Report to be signed on
its behalf by the undersigned, thereunto duly authorized.

                                       INTELLIGENT SYSTEMS CORPORATION
                                       Registrant

Date:  April 2, 2002                   By: /s/ J. Leland Strange
                                           -------------------------------------
                                               J. Leland Strange
                                               Chairman of the Board, President
                                               and Chief Executive Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, this report
has been signed below by the following persons on behalf of the Registrant and
in the capacities and on the dates indicated:

<TABLE>
<CAPTION>
SIGNATURE                                   CAPACITY                                         DATE



<S>                                         <C>                                              <C>
/s/ J. Leland Strange                       Chairman of the Board, President,                April 2, 2002
---------------------------------           Chief Executive Officer and Director
    J. Leland Strange                       (Principal Executive Officer)



/s/ Bonnie L. Herron                        Chief Financial Officer                          April 2, 2002
---------------------------------           (Principal Accounting and Financial Officer)
    Bonnie L. Herron



/s/ Donald A. McMahon                       Director                                         April 2, 2002
---------------------------------
    Donald A. McMahon



/s/ James V. Napier                         Director                                         April 2, 2002
---------------------------------
    James V. Napier


/s/ John B. Peatman                         Director                                         April 2, 2002
---------------------------------
    John B. Peatman



/s/ Parker H. Petit                         Director                                         April 2, 2002
---------------------------------
    Parker H. Petit
</TABLE>