Calculator Technical Information
Disclaimer/Terms of Use

Updated September 3, 2007.

Calculator IC Data

American Microsystems, Inc. Cal-Tex Semiconductor, Inc.
General Instrument Corp. Mitsubishi Electric Corp.
MOS Technology, Inc. MOSTEK
National Semiconductor Corp. Texas Instruments

Self-Test Functions

Calculator Related Patents

Calculator Forensics Project


Printed Resources


Calculator Reviews

Welcome to the calculator technical information web site. The primary purpose of this site is to disseminate information about the internal workings of our classic and not so classic handheld electronic calculators.

Help me! This web site was born out of the frustration of not being able to find basic technical information about the chips used in many of the old handheld calculators, information which can assist with fixing classic calculators. Please help me find additional technical information on the old calculators, information which can be put on this web site for others to access.

Thanks, Mike Sebastian

Disclaimer/Terms of Use regarding use of information on this web site.

On the web since January 2, 2000.

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