Revision as of 15:00, 3 April 2012 by 1=2 (talk | contribs) (grammar fixin's)

The abacus is a manual calculator that can do addition, subtraction, multiplication, division, square roots and cube roots. Where the abacus originated is a question not fully answered. To the experienced operator the abacus is a blazing fast calculator. The abacus is still widely used in rural parts of China and Japan.

This article is a stub. Help us out by expanding it.

Invalid username
Login to AoPS