| Information | |
|---|---|
| has gloss | eng: A Pinwheel calculator was a kind 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 the cost and the size of a mechanical calculators on which one could easily do the four basic operations (add, subtract, multiply and divide) by an order of magnitude. |
| lexicalization | eng: pinwheel calculator |
| instance of | e/Calculating machine |
| Meaning | |
|---|---|
| German | |
| has gloss | deu: Ein Sprossenrad ist ein Zahnrad mit verstellbarer Zähneanzahl. Es dient vor allem als Antrieb für mechanische Rechenmaschinen. Sprossenradmaschinen werden in Europa auch als Odhner-Maschinen bezeichnet (nach Willgodt Theophil Odhner). |
| lexicalization | deu: Sprossenrad |
| French | |
| has gloss | fra: Une Roue à nombre variable de dents est une roue dont le nombre de dents peut être changé grâce à la rotation d'une manette latérale. |
| lexicalization | fra: roue à nombre variable de dents |
| Castilian | |
| has gloss | spa: Las calculadoras de ruedas de pines (Pinwheel calculators) fueron inventadas independientemente por Frank Stephen Baldwin en Estados Unidos (1872) y Wilgott Theophil Odhner en Rusia (1874). Eran de tamaño más reducido y de menor costo que las calculadoras mecánicas, y permitían realizar fácilmente las cuatro operaciones básicas (sumar, restar, multiplicar y dividir). |
| lexicalization | spa: Calculadora de rueda de pines |
| Media | |
|---|---|
| media:img | Brunsviga13rm.png |
| media:img | Roue à nombre de dents variables.png |
| media:img | Sprossenrad baldwin.png |
| media:img | Sprossenrad leibniz.png |
| media:img | Sprossenrad poleni.png |
| media:img | Sprossenrad roth.png |
| media:img | Sprossenrad wertheimber.png |
| media:img | Sprossenrad-rechner.jpg |
| media:img | Sprossenrad.png |
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