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- Pinwheel_calculator abstract "A Pinwheel calculator was a class of mechanical calculator popular in the 19th and 20th century using, for its calculating engine, a set of wheels that had an adjustable number of teeth. These wheels, also called pinwheels, could be set by using a side lever which could expose anywhere from 0 to 9 teeth, and therefore when coupled to a counter they could, at each rotation, add a number from 0 to 9 to the result. By linking these wheels with carry mechanisms a new kind of calculator engine was invented. Turn the wheels one way and one performs an addition, the other way a subtraction. As part of a redesign of the arithmometer, they reduced by an order of magnitude the cost and the size of a mechanical calculators on which one could easily do the four basic operations (add, subtract, multiply and divide).Pinwheel calculators became extremely popular with the success of the Odhner Arithmometer.".
- Pinwheel_calculator thumbnail Roue_à_nombre_de_dents_variables.png?width=300.
- Pinwheel_calculator wikiPageExternalLink mechanicalarithm00feltrich.
- Pinwheel_calculator wikiPageExternalLink pinwheel.html.
- Pinwheel_calculator wikiPageExternalLink museum.
- Pinwheel_calculator wikiPageExternalLink operating_a_pinwheel_calculato.html.
- Pinwheel_calculator wikiPageExternalLink watch?v=YXMuJco8onQ.
- Pinwheel_calculator wikiPageID "1958464".
- Pinwheel_calculator wikiPageRevisionID "600846591".
- Pinwheel_calculator hasPhotoCollection Pinwheel_calculator.
- Pinwheel_calculator subject Category:Mechanical_calculators.
- Pinwheel_calculator type Calculator109887034.
- Pinwheel_calculator type CausalAgent100007347.
- Pinwheel_calculator type Expert109617867.
- Pinwheel_calculator type LivingThing100004258.
- Pinwheel_calculator type MechanicalCalculators.
- Pinwheel_calculator type Object100002684.
- Pinwheel_calculator type Organism100004475.
- Pinwheel_calculator type Person100007846.
- Pinwheel_calculator type PhysicalEntity100001930.
- Pinwheel_calculator type Whole100003553.
- Pinwheel_calculator type YagoLegalActor.
- Pinwheel_calculator type YagoLegalActorGeo.
- Pinwheel_calculator comment "A Pinwheel calculator was a class of mechanical calculator popular in the 19th and 20th century using, for its calculating engine, a set of wheels that had an adjustable number of teeth. These wheels, also called pinwheels, could be set by using a side lever which could expose anywhere from 0 to 9 teeth, and therefore when coupled to a counter they could, at each rotation, add a number from 0 to 9 to the result.".
- Pinwheel_calculator label "Calculadora de rueda de pines".
- Pinwheel_calculator label "Pinwheel calculator".
- Pinwheel_calculator label "Roue à nombre variable de dents".
- Pinwheel_calculator label "Sprossenrad".
- Pinwheel_calculator sameAs Sprossenrad.
- Pinwheel_calculator sameAs Calculadora_de_rueda_de_pines.
- Pinwheel_calculator sameAs Roue_à_nombre_variable_de_dents.
- Pinwheel_calculator sameAs m.068_9h.
- Pinwheel_calculator sameAs Q1429194.
- Pinwheel_calculator sameAs Q1429194.
- Pinwheel_calculator sameAs Pinwheel_calculator.
- Pinwheel_calculator wasDerivedFrom Pinwheel_calculator?oldid=600846591.
- Pinwheel_calculator depiction Roue_à_nombre_de_dents_variables.png.
- Pinwheel_calculator isPrimaryTopicOf Pinwheel_calculator.