1 min read

Great Gadgets Part 3

Pocket Calculator

Desktop (aff) electronic calculators starting appearing during the 1960's, but if you wanted to perform complex mathematical equations when you were away from an electrical outlet, a slide rule was your only alternative (I don't even know what a slide rule is). Texas Instruments began selling the SR-10 in 1973. It was a pocket sized, battery operated calculator that could perform complex calculations for a $150.

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