7 août 130 av. J.-C. - Abacus
Description:
The abacus 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. It was a way for merchants who traded goods to keep count of goods they bought and sold (to help count large numbers).Ajouté au bande de temps:
Date:
7 août 130 av. J.-C.
Maintenaint
~ Il y a 2157 ans