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Public List: Calculating Devices
Some interesting pre-electronic number crunchers.
difference engine, lebombo bone, ishango bone, abacus, antikythera mecha..., napier's bones, calculating clock, pascaline, stepped reckoner, jacquard loom, arithmometer, arithmetique and 11 more...
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skipvia 1623, Germany. Wilhelm Schickard invented a device called the Speeding Clock or the Calculating Clock. The device could add and subtract six-digit numbers and was used by Johannes Kepler to calculate astronomical tables. For this, Wilhelm Schickard was considered by some to be the "Father of Computer Age." (But see antikythera mechanism for an much earlier mechanical calculator.) See Calculating Devices. Jan 26, 2008