Computer History - B.C.
| Year | Event |
| 300 B.C. | The counting board much like the later abacus is believed to be first used by the Babylonians circa. |
| 500 B.C. | The abacus much like the device we know today begins being used. |
| Year | Event |
| 300 B.C. | The counting board much like the later abacus is believed to be first used by the Babylonians circa. |
| 500 B.C. | The abacus much like the device we know today begins being used. |
