Define Abacus??
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It is an instrument for performing calculations by sliding counters along rods or in grooves
2: a slab that forms the uppermost member or division of the capital of a column
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Hello mates
Here is Ur answer
Abacus : 500 years ago , Abacus was discovered in China . This machine was used for mathematical calculation . It is also called as "counting frame " .This machine was made from square wooden frame which has hard wires with sliding beads on each wire
Hope it helps uh
@Cutedoll07
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