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The stepped reckoner or Leibniz calculator was a mechanical calculator invented by the German mathematician Gottfried Wilhelm Leibniz (started in 1673, when he presented a wooden model to the Royal Society of London [2] and completed in 1694). [1]
The earliest known use of the noun reckoner is in the Middle English period (1150—1500). OED's earliest evidence for reckoner is from around 1225, in Ancrene Riwle . reckoner is formed within English, by derivation.
1. : one that reckons. 2. : an aid to reckoning. especially : a book of tables. called also ready reckoner. Word History. Etymology. Middle English rikenere, from rikenen to reckon + -ere -er. Love words?
reckoner. Any of various devices or tables used to facilitate reckoning, esp a ready reckoner.... Click for English pronunciations, examples sentences, video.
Step Reckoner, a calculating machine designed (1671) and built (1673) by the German mathematician-philosopher Gottfried Wilhelm von Leibniz. The Step Reckoner expanded on the French mathematician-philosopher Blaise Pascal’s ideas and did multiplication by repeated addition and shifting.
A reconstruction of Leibniz's Stepped Reckoner. Conceptually, the Stepped Reckoner was a remarkable machine whose operating principles eventually led to the development of the first successful mechanical calculator. The key to the device was a special gear, devised by Leibniz and now known as the Leibniz wheel, that acted as a mechanical ...
reckoner (n.)c. 1200, rekenere, "one who keeps accounts or computes," agent noun from reckon (v.). Later especially "an aid in reckoning, something that assists a person to reckon accounts;" especially "book of tables used in calculation," often known as a ready reckoner (1757).
