Question

a short note on Abacus ​

Answer 1

Answer:

Abacus was the first mechanical device used for adding subtracting dividing and multiplying.

it was created in China and it has two parts heaven and earth in heaven there are two lines beads and in a Earth there are five lines beads.

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Answer 2

Answer---

• Abacus

• Abacus is known to be the first mechanical calculating device.•

• Which was used to be performed addition and subtraction easily and speedily.

• Abacus is made up of the wooden frame in which rod where fitted across with rounds beads sliding on the rod.

• hope it will help

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