Question

What is Abacus ? Who invented it and when???​

Answer 1

Explanation:

The abacus (plural abaci or abacuses), also called a counting frame, is a calculating tool that was in use in the ancient Near East, Europe, China, and Russia, centuries before the adoption of the written Hindu–Arabic numeral system.[1] The exact origin of the abacus is still unknown. Today, abacuses are often constructed as a bamboo frame with beads sliding on wires, but originally they were beans or stones moved in grooves of sand or on tablets of wood, stone, or metal.

Abacuses come in different designs. Some designs, like the bead frame consisting of beads divided into tens, are used mainly to teach arithmetic, although they remain popular in the post-Soviet states as a tool. Other designs, such as the Japanese soroban, have been used for practical calculations even involving several digits. For any particular abacus design, there are usually numerous different methods to perform a certain type of calculation, which may include basic operations like addition and multiplication, or even more complex ones, such as calculating square roots. Some of these methods may work with non-natural numbers.

The abacus was invented in China, around 1300 BC. It was popularized during the Ming dynasty (1368 AD to 1644 AD), and has been a very popular calculating device ever since. Other early forms of the abacus include the ancient Roman abacuses consisting of a sand-covered wax tablet, marked table,, or grooved table.

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Answer 2

Explanation:

Abacus is was used in ancient times for calculating numbers through the Basic Arithmetic System.It was invented by Tim Cranmer in China 1300 BC

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