Abacus

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Deutsch: Ein Abakus ist Hilfsmittel zum Ausführen verschiedener Rechenoperationen.
English: An Abacus is a calculation tool.
Français : Un abaque est un instrument facilitant les calculs.
Galego: Un ábaco é un instrumento de cálculo.
Norsk nynorsk: Ei Kuleramme er eit reknehjelpemiddel.
Русский: Абак, счёты.

Overview

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  • Chinese abacus
    Chinese abacus
  • Chinese abacus, big
    Chinese abacus, big
  • Chinese abacus, long
    Chinese abacus, long
  • Chinese abacus
    Chinese abacus
  • Danish abacus from an elementary school.
    Danish abacus from an elementary school.
  • German abacus
    German abacus
  • Japanese soroban
    Japanese soroban
  • Polish abacus
    Polish abacus
  • Reconstruction of a Roman abacus
    Reconstruction of a Roman abacus
  • A Russian abacus
    A Russian abacus

History

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Abacus in Ancient pictures

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  • 145 AD
    145 AD
  • 177 AD
    177 AD
  • 204 AD
    204 AD
  • 218 AD
    218 AD
  • 236 AD
    236 AD
  • Roman abacus from 1911 Encyclopædia Britannica
    Roman abacus from 1911 Encyclopædia Britannica
  • Reconstruction of Roman Abacus, made by RGZ Museum Mainz in 1977
    Reconstruction of Roman Abacus, made by RGZ Museum Mainz in 1977

Abacus in Medieval pictures

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  • Monastic abacus, 10-12th century
    Monastic abacus, 10-12th century
  • End of 13th century
    End of 13th century
  • 1340
    1340
  • 14th century
    14th century
  • 14 - 15th century
    14 - 15th century
  • 1459
    1459

Abacus in 16th century pictures

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  • 1504
    1504
  • 1508
    1508
  • 1514
    1514
  • 1525
    1525
  • 1532
    1532
  • 1543
    1543
  • 1544
    1544
  • 1553
    1553
  • 1573
    1573
  • 1574
    1574
  • 1592
    1592
  • Ming Dynasty (1368–1644)
    Ming Dynasty (1368–1644)
  • Rechentisch (Holzschnitt vermutlich aus Straßburg)
    Rechentisch (Holzschnitt vermutlich aus Straßburg)

Abacus in pictures in Modern times

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  • 2nd quarter of 17th century
    2nd quarter of 17th century
  • 2nd quarter of 17th century
    2nd quarter of 17th century
  • 1641
    1641
  • 1685
    1685
  • 1884-85
    1884-85
  • 1892
    1892
  • 1899
    1899
  • Early 20th century
    Early 20th century
  • 1914
    1914
  • 1930
    1930
  • 1938
    1938
  • 2007
    2007
  • 2011
    2011
  • Huge Abacus at Guohua Abacus Museum
    Huge Abacus at Guohua Abacus Museum

Specific topics

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Abacus in art

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  • Rotschild canticles Septem artes liberales, 13th century
    Rotschild canticles Septem artes liberales, 13th century
  • 1504
    1504
  • 1500-50
    1500-50
  • Hokusai, 1760
    Hokusai, 1760
  • early 20th century
    early 20th century

Types of abacus

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  • Abacus anagoria
    Abacus anagoria
  • Binary abacus
    Binary abacus
  • Long abacus
    Long abacus
  • Napier's abacus
    Napier's abacus
  • Positional decimal system on abacus
    Positional decimal system on abacus
  • School abacus
    School abacus
  • Sharp abacus
    Sharp abacus
  • Soroban
    Soroban
  • Table football abacus
    Table football abacus

The Small Abacus of Al-Khwarizmi

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Addition examples

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  • 6
    6
  • + 4
    + 4
  • = 10
    = 10
  • 40
    40
  • +12
    +12
  • =52
    =52

See also

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