It is roughly rectangular in shape
The Chinese abacus
the history about the abacus is that 3000 years ago the chinese invented the abacus. The abacus was made of wood parrelel rod and beads.
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.
China invented the abacus .
ABACUS
How did the abacus occur?
disadvantage of abacus
An Abacus has beads and strings.
The Chinese abacus
the history about the abacus is that 3000 years ago the chinese invented the abacus. The abacus was made of wood parrelel rod and beads.
it is the abacus. :D :D :D i got is dummies
the Chinese invented the abacus
the invenor of the abacus is the invenor of me
The abacus II!
Abacus was invented by the Chinesethe abacus was also known as the first computer