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TIL The first commercial graphing calculator was introduced by Casio in 1985 for $75. By 1986 it had been adopted by a program in Ohio schools, and other states soon followed

Electronic Calculators—Handheld

https://americanhistory.si.edu/collections/object-groups/handheld-electronic-calculators

In the course of the 1970s, handheld electronic calculators transformed the way tens of millions of people did arithmetic. Engineers abandoned slide rules, business people gave up desktop calculating machines, and shoppers replaced simple adding machines and adders.

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blackbelt352

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Delaware checking I'm we basically had the TI 83 or TI-84

til

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