English, asked by hanveeshrr, 10 months ago

In 1642 Blaise Pascal invented
the adding machine. 336 years
later the solar pocket calculator
was invented, when was the
solar pocket calculator invented ?

Answers

Answered by veeshh
7

Solar-powered calculators are hand-held electronic calculators powered by solar cells mounted on the device. They were introduced at the end of the 1970s. But was invented at 1978

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