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Q: How did the abacus occur?

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the abacus replaced the abaci

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Charles Babbage developed abacus in 1820 for information send email to sahil2828@gmail.com

The first Abacus (plural Abaci) are believed to have come from Mesopotamia circa 2700 BC.the Chinese abacus, called a suànpándates to around the 2nd cenruary BC and is beleived to be a copy of the Roman abacus from around the 1st centuary BC.The Roman one was thought to be a stolen, and improved Persian abacus and the Persians believe to have copied the Egyptian one.

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China invented the abacus .

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the history about the abacus is that 3000 years ago the chinese invented the abacus. The abacus was made of wood parrelel rod and beads.

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