Friday, December 11, 2009
ABACUS
In 3000 B.C Chinese invented a device called Abacus or Soroban.It consisted of a square frame.In it beads were arranged on strings.It could perform addition,subtraction,multiplication,and division at great speed.That is why it is called the first computer.It is still used in Far East and Middle East countries.
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment