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- Arithmometer abstract "The Arithmometer or Arithmomètre was the first digital mechanical calculator strong enough and reliable enough to be used daily in an office environment. This calculator could add and subtract two numbers directly and could perform long multiplications and divisions effectively by using a movable accumulator for the result. Patented in France by Thomas de Colmar in 1820 and manufactured from 1851 to 1915, it became the first commercially successful mechanical calculator. Its sturdy design gave it a strong reputation of reliability and accuracy and made it a key player in the move from human computers to calculating machines that took place during the second half of the 19th century.Its production debut of 1851 launched the mechanical calculator industry which ultimately built millions of machines well into the 1970s. For forty years, from 1851 to 1890, the Arithmometer was the only type of mechanical calculator in commercial production and it was sold all over the world. During the later part of that period two companies started manufacturing clones of the Arithmometer: Burkhardt, from Germany, which started in 1878, and Layton of the UK, which started in 1883. Eventually about twenty European companies built clones of the arithmometer until the beginning of WWII.".
- Arithmometer thumbnail Arithmometre.jpg?width=300.
- Arithmometer wikiPageExternalLink indexEnglish.html.
- Arithmometer wikiPageExternalLink PageModelesAutresArithmoEnglish.html.
- Arithmometer wikiPageExternalLink indexEnglish.html.
- Arithmometer wikiPageExternalLink arithmometer.
- Arithmometer wikiPageExternalLink pictures_Thomas.htm.
- Arithmometer wikiPageID "1212596".
- Arithmometer wikiPageRevisionID "589104714".
- Arithmometer align "left".
- Arithmometer caption "The single-digit multiplier is set on the left slider while the multiplicand is set on the three sliders on the right".
- Arithmometer caption "The three Leibniz cylinders can be seen on the left and the pulling ribbon on the right".
- Arithmometer direction "vertical".
- Arithmometer footer "Drawings of the 1822 machine".
- Arithmometer hasPhotoCollection Arithmometer.
- Arithmometer image "Mechanism Arithmometer 1822.png".
- Arithmometer image "Platine Arithmometer 1822.png".
- Arithmometer width "220".
- Arithmometer subject Category:Inventions_in_the_collection_of_the_Smithsonian_Institution.
- Arithmometer subject Category:Mechanical_calculators.
- Arithmometer type Calculator109887034.
- Arithmometer type CausalAgent100007347.
- Arithmometer type Expert109617867.
- Arithmometer type LivingThing100004258.
- Arithmometer type MechanicalCalculators.
- Arithmometer type Object100002684.
- Arithmometer type Organism100004475.
- Arithmometer type Person100007846.
- Arithmometer type PhysicalEntity100001930.
- Arithmometer type Whole100003553.
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- Arithmometer comment "The Arithmometer or Arithmomètre was the first digital mechanical calculator strong enough and reliable enough to be used daily in an office environment. This calculator could add and subtract two numbers directly and could perform long multiplications and divisions effectively by using a movable accumulator for the result. Patented in France by Thomas de Colmar in 1820 and manufactured from 1851 to 1915, it became the first commercially successful mechanical calculator.".
- Arithmometer label "Arithmometer".
- Arithmometer label "Arithmometer".
- Arithmometer label "Arithmomètre".
- Arithmometer label "Aritmómetro".
- Arithmometer label "Arytmometr".
- Arithmometer label "Арифмометр".
- Arithmometer sameAs Arithmometr.
- Arithmometer sameAs Arithmometer.
- Arithmometer sameAs Aritmómetro.
- Arithmometer sameAs Arithmomètre.
- Arithmometer sameAs Arytmometr.
- Arithmometer sameAs m.06wcbm3.
- Arithmometer sameAs Q669329.
- Arithmometer sameAs Q669329.
- Arithmometer sameAs Arithmometer.
- Arithmometer wasDerivedFrom Arithmometer?oldid=589104714.
- Arithmometer depiction Arithmometre.jpg.
- Arithmometer isPrimaryTopicOf Arithmometer.