Question

when is Abacus created​

Answer 1

Answer:

The abacus, called Suan-Pan in Chinese, as it appears today, was first chronicled circa 1200 C.E. in China. The device was made of wood with metal re-inforcements

Answer 2

Answer:

it was created in 1200 c.e.

and

it was created by chinese

and it is known as sunpan in China