2 h 52 min, 2 janv. 232 ans av. J.-C. - Ababacus
Description:
The abacus (plural abaci or abacuses), also called a counting frame, is a calculating tool that was in use in Europe, China and Russia, centuries before the adoption of the written Hindu–Arabic numeral system. The exact origin of the abacus is still unknown
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Date:
2 h 52 min, 2 janv. 232 ans av. J.-C.
Maintenaint
~ Il y a 2257 ans
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