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The abacus, a calculating tool used since ancient times, originated in Sumeria around 2700 to 2300 B.C.E. and was utilized across various cultures before the Hindu-Arabic numeral system. The oldest known example is the Salamis Tablet from Greece dating back to 300 B.C.E. Variations of the abacus include the Japanese soroban.

Author

oshiorenuaabu

Language

EN