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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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How did the abacus occur?
How did the abacus occur?
What ancient device did the abacus replace?
the abacus replaced the abaci
When was abacus developed?
Charles Babbage developed abacus in 1820 for information send email to sahil2828@gmail.com
Where can you find a abacus?
online
Where abacus came from?
China
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