Last modified on 9 May 2012, at 06:50

Category:Leibnitz calculator

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 10 files are in this category, out of 10 total.