The Staffelwalze, or Stepped Reckoner, a digital calculating machine invented by Gottfried Wilhelm Leibniz around 1672 and built around 1700. It was the first known calculator that could perform all four arithmetic operations; addition, subtraction, multiplication and division. 67 cm (26 inches) long. Only two machines were made. Collection: Museum Herrenhausen Palace, Hanover, Germany. Photo: Hajotthu. (CC BY-SA 3.0).
The Staffelwalze, or Stepped Reckoner, a digital calculating machine invented by Gottfried Wilhelm Leibniz around 1672 and built around 1700. It was the first known calculator that could perform all four arithmetic operations; addition, subtraction, multiplication and division. 67 cm (26 inches) long. Only two machines were made. Collection: Museum Herrenhausen Palace, Hanover, Germany. Photo: Hajotthu. (CC BY-SA 3.0). Source: Wikimedia Commons.

Socialistisk Biblioteks Tidslinje med links til begivenheder og personer i 1646.

Se også Index over personer, organisationer/partier og værker (som bøger, malerier, mm.), steder, begivenheder, mv., der er omtalt på hele Tidslinjen, titler og indhold på emnelisterne osv.

 

1. juli 1646

Den tyske rationalistiske filosof Gottfried Wilhelm Leibniz fødes i Leipzig (dør i Hannover 14 november 1716).

Gottfried Wilhelm Leibniz (1646-1716). Engraving from 1768 by Pierre Savart (1737–1780), French engraver. Collection: From th book: Louis Dutens (1730-1812): “Gothofredi Guillelmi Leibnitii … opera omnia, nunc primum collecta, in classes distributa, præfationibus et indicibus exornata, studio Ludovici Dutens / Gothofredus Guillelmus Leibnitius. Volumes: Tomus primus, quo theologica continentur. Publisher: Genevæ : Apud fratres de Tournes Peace Palace Library” in Bibliotheek van het Vredespaleis, The Hague. Public Domain. Source: Wikimedia Commons.

 

Se:

G.W. Leibniz (Denstoredanske.dk)

Gottfried Wilhelm Leibniz (Wikipedia.dk)

Gottfried Leibniz (Wikipedia.org). Engelsk artikel.

Leibnitz, Gottfried Wilhelm (1646-171 (Marxists Internet Archive; Glossary of People)

Gottfried Leibnitz (1714): Monadology (Marxists Internet Archive)

Se også Socialistisk Bibliotek:

Linkboxen: Oplysningstiden / The Enlightenment

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