aug 7, 130 BC - 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).Added to timeline:
Date:
aug 7, 130 BC
Now
~ 2157 years ago