"Schickard" returned 1 hits

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Author: Wilhelm Schickard (1592-1635)
The first known adding machine, a mechanical calculator called the "Calculating Clock.'' It could add and subtract up to six-digit numbers, based on the movement of six dented wheels geared through a "mutilated" wheel which with every full turn allowed the wheel located at the right to rotate 1/10th of a full turn
Mediaitems: reproduction of Schickard's calculating clock, Schickard biography, History of mechanical calculators - Part 1
Category: Technology