Category:Leibnitz calculator
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The Leibniz Stepped Drum (or Step(ped) Reckoner, a translation of its German name Staffelwalze) was a digital mechanical calculator invented by German mathematician and philosopher Gottfried Wilhelm Leibniz around 1672 and completed 1694.
Media in category "Leibnitz calculator"
The following 4 files are in this category, out of 4 total.
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