The Pascal calculator (1 jan 1642 ano – 14 h 49 m, 1 jul 2019 ano)

Descrição:

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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