Because it was the first portable counting device - sort of the first 'pocket' calculator !
The Chinese abacus
Abacus was invented by the Chinesethe abacus was also known as the first computer
Asiana Abacus was created in 1991.
the abacus is made by the Egyptian in Egypt.
The abacus was originated in China in 3000 B.C.(:
China invented the abacus .
ABACUS
How did the abacus occur?
An Abacus has beads and strings.
The Chinese abacus
it is the abacus. :D :D :D i got is dummies
The abacus II!
the Chinese invented the abacus
the invenor of the abacus is the invenor of me
Abacus was invented by the Chinesethe abacus was also known as the first computer
the antonym for abacus is future calculator
China invented the Abacus.