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skipvia commented on the word calculating clock

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.

January 27, 2008