The Pascal calculator (1 gen 1642 anni – 14 ore 49 min, 1 lugl 2019 anni)

Descrizione:

The Pascal calculator was invented in 1642, by French inventor and mathematician Blaise Pascal.
It performed calculations through a clock-type of mechanism and it was presented to the public in 1645

They were difficult to produce and so few were ever made. . The machine was designed to add and subtract two numbers directly and to perform multiplication and division through repeated addition or subtraction.

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