The Pascal calculator (1 ene 1642 año – 14 h 49 m, 1 jul 2019 año)

Descripción:

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.

Añadido al timeline:

fecha: