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1971's Smallest Battery-Powered Calculator: Dictaphone 1680
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Homer J Simpson:


Cool video on a vintage calculator from 1971 by LGR.

TomKatt:
Only 5 years later Casio had got them down to the size of a matchbook...

I remember my dad bringing home a TI 4 banger around '72 or '73...  It was miraculous!

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