Pinwheel calculator
Query URLs
https://term.museum-digital.de/md-de/tag/28913
- Note
- A pinwheel calculator is a class of mechanical calculator described as early as 1685, and popular in the 19th and 20th century, calculating via wheels whose number of teeth were adjustable. 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 mechanical calculators on which one could easily do the four basic operations (add, subtract, multiply and divide).
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Odhner-Rechenmaschine
Ab 1907 wurden an den...
Object information
Image: Heinz Nixdorf MuseumsForum - CC BY-NC-SA -
Schubert Mod. DRV
Diese mechanische...
Object information
Image: Heinz Nixdorf MuseumsForum - CC BY-NC-SA -
Brunsviga Mod. B
Erste serienmäßig gefertigte...
Object information
Image: Heinz Nixdorf MuseumsForum - CC BY-NC-SA -
Brunsviga Mod. 13 RK
Die 13 RK ist die...
Object information
Image: Heinz Nixdorf MuseumsForum - CC BY-NC-SA -
Walther WSR 160
Die Walther WSR 160 ist eine...
Object information
Image: museum comp:ex - CC BY-NC-SA
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