Amazing at the Time: Dad's First Calculator in 1973 - Connecting the Dots

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Sinclair Cambridge pocket calculator

The History Of The Calculator: When was the Calculator First Invented?

File:Vintage Texas Instruments Datamath Pocket LED Calculator, Model TI-2500, Version 3, Made in the USA, Circa 1973 (41029101670).jpg - Wikimedia Commons

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The Pocket Calculator Race

John Wolff's Web Museum - Early Electronic Calculators

HNF - Desk and pocket calculators – Electronic mass products

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HNF - Desk and pocket calculators – Electronic mass products

Victor 4900 Programmable Calculator

How do calculators work? - Explain that Stuff

My 70's TV Childhood