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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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11 abr 1970 año - First battery powered, hand-held, electronic calculator.

Descripción:

First calculator using just LSI (Large Scale Integration) chips, with ICs by Rockwell. The size & weight much reduced, calculator now portable.
First battery powered, hand-held calculator. Green fluorescent tube displays introduced.

Añadido al timeline:

The Calculator

ByMarshall
13 sep 2017
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fecha:

11 abr 1970 año
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~ 55 years ago
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