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 8 files are in this category, out of 8 total.