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A HISTORY OF THE COMPUTER

FIVE ERAS IN COMPUTER DEVELOPMENT. Pre-HistoryElectronicsMiniMicroNetwork. PRE-HISTORY ERA 4th century B.C. to 1930s. The abacus is believed to have been invented in 4th century B.C.The Antikythera mechanism, a device used for registering and predicting the motion of the stars and planets, is dated to 1st century B.C.Arabic numerals were introduced in Europe in the 8th and 9th century A.D. and was used until the 17th century..

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A HISTORY OF THE COMPUTER

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