Ancient manual calculation device still used in East Asia today. Japanese term is [i]soroban[/i] (そろばん).

h4. For more info:

* "Wikipedia, Abacus article":http://en.wikipedia.org/wiki/Abacus
* "Wikipedia, separate article for the Japanese abacus":http://en.wikipedia.org/wiki/Soroban

h4. See also

* [[calculator]]
そろばん