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Calculator History - Invention of the Hand-held Calculator
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Calculator History - Invention of the Hand-held Calculator
Website URL:
http://www.ideafinder.com/history/inventions/handcalculator.htm
Category:
Forklifts
The pocket calculator went on the market on September 21, 1972, as the TI-2500 and was capable of addition, subtraction, multiplication ...
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