Blaise Pascal creates the Pascaline, or Pascal's calculator

1642
Blaise Pascal creates the Pascaline, or Pascal's calculator

Blaise Pascal (June 19 1623 – August 19 1662) was a French mathematician. In 1643, Pascal designed and built a mechanical calculator called the Pascaline, or Pascal's calculator.

The machine was capable of both addition and subtraction. Users entered numbers into the calculator by manipulating the dials. Pascal invented the device for his father, who was a tax collector, to help him calculate taxes owed and received.

Over the next 10 years, Pascal built 50 of these machines. Two of the original devices can be seen at The Musée des Arts et Métiers in Paris and the Zwinger museum in Dresden, Germany.

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Blaise Pascal creates the Pascaline, or Pascal's calculator

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