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Abacus
(redirected from abacuses)

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Abacus
An instrument allowing one to quickly add and subtract numbers. Generally, an abacus is composed of a rectangular frame in which horizontal rods are partially covered with beads. The beads may be moved one way or the other to make calculations. It was invented in China in the 2nd century CE and is considered the earliest calculator.
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BANGKOK, April 1 Kyodo Ryuichi Takahashi, former mayor of Yokota in Shimane Prefecture, was honored Saturday by Thailand's Education Ministry for his role in abacuses to Thai pupils and contributing to the revival of abacus courses in Thai education.
Shimane Pref. ex-mayor feted for bringing abacus to Thais by Asian Economic News
I saw that in the Tokyo railway station, many of the ticket sellers actually use abacuses.
Molecular abacus counts on buckyballs by Science News
 
 
 
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