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Home » Calculating Gears

Calculating Gears

January 1, 1997
Interesting gear factoids discovered wasting time on the Net while pretending to be working...The first four-function mechanical calculator was built by the mathematician Gottfried Leibniz in 1694. While not commercially available for nearly 200 years, the design was the basis of many such calculators until well into this century.
The Gear Industry History Addendum
KEYWORDS cartoons history Leibniz mechanical calculator movies
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