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January 4, 1972: HP-35 Scientific Calculator

HP-35 Scientific Calculator

HP-35 Scientific Calculator

1972 - HP introduces the HP-35 – which was the first handheld scientific calculator. It was named after the fact it had 35 buttons. The unit weighed 9 oz and cost $395. However, this would ultimately be dubbed “The slide-rule killer”

Wikazine – Full show notes for January 4

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