bn:02141252n
Noun Named Entity
Categories: Mechanical calculators, Gottfried Leibniz
EN
stepped reckoner  Step reckoner  Staffelwalze  stepped drum
EN
The stepped reckoner or Leibniz calculator was a mechanical calculator invented by the German mathematician Gottfried Wilhelm Leibniz around 1672 and completed in 1694. Wikipedia
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EN
The stepped reckoner or Leibniz calculator was a mechanical calculator invented by the German mathematician Gottfried Wilhelm Leibniz around 1672 and completed in 1694. Wikipedia