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New page: The abacus (plural abaci) was a digital calculator that was used to perform mathematical calculation especially for accountancy in medieval times. It works by having numbers represented by...
The abacus (plural abaci) was a digital calculator that was used to perform mathematical calculation especially for accountancy in medieval times. It works by having numbers represented by beads sliding on a rod. Today even though it is obsolete it is still widely used in Asia, particularly in the People's Republic of China and the Republic of China.