Timeline of computing hardware before 1950: Difference between revisions

Revision as of 22:16, 9 January 2024

Revision as of 21:14, 31 January 2024

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| 1851

| [[France]]

|| After 30 years of development, [[Thomas de Colmar]] launched the mechanical calculator industry by starting the manufacturing of a much simplified [[Arithmometer]] (invented in 1820). Aside from its clones, which started thirty years later,<ref>the first clone maker was made by Burkhardt from Germany in 1878</ref> it was the only calculating machine available anywhere in the world for forty years ([[Dorr Felt|Dorr E. Felt]] only sold one hundred [[comptometer]]s and a few [[comptograph]]s from 1887 to 1890<ref>{{cite book|last=Felt|first=Dorr E.|title=Mechanical arithmetic, or The history of the counting machine|publisher=Washington Institute|___location=Chicago|page=[https://archive.org/details/mechanicalarithm00feltrich/page/n7 4]|year=1916|url=https://archive.org/details/mechanicalarithm00feltrich}}</ref>). Its simplicity made it the most reliable calculator to date. It was a big machine (a 20 digit arithmometer was long enough to occupy most of a desktop). Even though the arithmometer was only manufactured until 1915, twenty European companies manufactured improved clones of its design until the beginning of WWII;. Prominent clone theymanufacturers wereincluded Burkhardt, Layton, Saxonia, Gräber, Peerless, Mercedes-Euklid, XxX, Archimedes,and etc..Archimedes.

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| 1853