Friday 11 July 2014

CHARLES XAVIER CALCULATING DEVICE (1785-1870), Arithmometer.

CHARLES XAVIER CALCULATING DEVICE (1785-1870):
Charles Xavier Thomas de Colmar invented the first calculating machine to be produced in large numbers. This invention came about in France in 1820 as part of a national competition and the machine was called the Arithmometer.

                                    


The Arithmometer was essentially an early and large version of a pocket calculator (occupying the best part of a desk), and by 1845 there was a large, commercially successful industry involved in the manufacture of these machines.

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