Asked in InventionsComputer HistoryMath and Arithmetic
When was the abacus invented?
October 29, 2015 6:42AM
The abacus was invented around 2,700-2,300 BCE, by the Sumerians (Mesopotamia); that makes the invention about 4,400 years old.
This is the oldest dated abacus, there are several versions between 2,700 - 1,000 BCE, with many groups claiming responsibility for the invention.