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1 jul 1971 año - Also early 1971 - The first true pocket calculator, the LE-120A "HANDY", is released by Busicom. It is also the first calculator using an LED display, a single IC, and replaceable batteries.

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Calculator history

ByCasey
4 oct 2017

fecha:

1 jul 1971 año
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~ 52 years ago
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