**Exhibit 99.1**

**CERTIFICATION OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER****PURSUANT TO****18 U.S.C. SECTION 1350,****AS ADOPTED PURSUANT TO****SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002**

I,Charles S. Byrne, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Quarterly Report of Hytek Microsystems, Inc. on Form 10-KSB for the quarterly period ended September 28,2002 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that information contained in such Quarterly Report fairly presents in all material respects the financial condition and results ofoperations of Hytek Microsystems, Inc. 

|        |   |   |      |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
|--------|--------|--------|-----------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|   |        |   | By:  | /s/ CHARLES S. BYRNE                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
|        |        |        |           |    Name: **Charles S. Byrne**   Title: **Chairman, President & Chief Executive Officer**
I, Sally B. Chapman, certify, pursuant to 18 U.S.C. Section 1350, as adoptedpursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Quarterly Report of Hytek Microsystems, Inc. on Form 10-QSB for the quarterly period ended September 28, 2002 fully complies with the requirements of Section 13(a) or 15(d) of theSecurities Exchange Act of 1934 and that information contained in such Quarterly Report fairly presents in all material respects the financial condition and results of operations of Hytek Microsystems, Inc. 
      By: /s/ SALLY B. CHAPMAN   Name: **Sally B. Chapman**   Title: **Chief Financial Officer & Secretary**
 
  |