Abacus
From Wikimedia Commons, the free media repository
Deutsch: Ein Abakus ist Hilfsmittel zum Ausführen verschiedener Rechenoperationen.
English: An Abacus is a calculation tool.
Galego: Un ábaco é un instrumento de cálculo.
Norsk (nynorsk): Ei Kuleramme er eit reknehjelpemiddel.
Русский: Абак, счёты.
 An abacus from a Danish elementary school. Early 20th century. |
 A Chinese (top) and a Japanese (bottom) abacus |
 A Russian abacus |
 Reconstruction of a Roman abacus |
 Image of an abacus from Encyclopedia Britannica |
 A Chinese abacus |
 A big Chinese abacus |
 A long Chinese abacus |
 A Japanese soroban |
 German abacus |
 An example of addition using an abacus |
 A Chinese abacus (top) and a Japanese abacus (bottom). Despite the appearances, both are actually made in Mainland China. |
[edit] Abacus in art
 Hokusai, 1760 |
[edit] Abacus in Medieval Pictures
.png) |
 |
 |
 |
 |
 |
 |
 |
 |
[edit] The Small Abacus of Al-Khwarizmi
 |
 |
 |
 |
 |
