![]() In fact, the oldest surviving abacus was used in 300 B.C. The abacus is often wrongly attributed to China. A skilled abacus operator can work on addition and subtraction problems at the speed of a person equipped with a hand calculator (multiplication and division are slower). Its only value is that it aids the memory of the human performing the calculation. The Chinese Abacus was an early aid for mathematical computations. Historical and Modern Photos of people and locations showing an Abacus. (not to be confused by the mechanical Addding Machine of the same name) This city is known as the product area of Soroban (abacus, counting frame for performing arithmetic processes).
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