Casio SL-800 Calculator Card (1990s)

 

This is an example of one of the thinnest electronic calculators made.
The Casio SL-800 is not much bigger than a credit card.

 

History of Computing

An Encyclopedia of the People and Machines that Made Computer History

Copyright © 1982-2000, Lexikon Services "History of Computing" ISBN 0-944601-78-2

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