Abacus was Invented (1 janv. 2700 av. J.-C. – 1 janv. 2300 av. J.-C.)
Description:
-A calculating tool that could do simple math-First used by Babylonians, Chinese, and Egyptians
Ajouté au bande de temps:
Date:
1 janv. 2700 av. J.-C.
1 janv. 2300 av. J.-C.
~ 400 years