The Chinese abacus
Abacus was invented by the Chinesethe abacus was also known as the first computer
The abacus is considered the first adding machine because it was the first tool that was used to add with. There were not any counting devices until the invention of the abacus in 3000 BC.
Abacus
Unknown
ABACUS
Abacus was invented by the Chinesethe abacus was also known as the first computer
The abacus is considered the first adding machine because it was the first tool that was used to add with. There were not any counting devices until the invention of the abacus in 3000 BC.
it is the abacus. :D :D :D i got is dummies
Abacus
Abacus.
An abacus.
abacus
Unknown
Abacus
abacus
ABACUS
Abacus