Question

Who invented Abacus?

Answer 1

Inventor of Abacus

Abacus is a calculating device that has been around since the beginning of time. The Abacus's creator is unclear, however, it is thought to have been created by the ancient Mesopotamians of Sumeria between $2700$ and $2300$ BC.

Ancient Mesopotamians of Sumeria invented Abacus between $2700$ and $2300$ BC.