Digi-Comp II

The Digi-Comp II was a toy computer manufactured by E.S.R., Inc. that used marbles rolling down a ramp to perform basic calculations. A two-level masonite platform with guides served as the medium for a supply of marbles that rolled down an inclined plane moving plastic cams as they went. The plastic cams played the part of flip-flops in an electronic computer - as a marble passed one of the cams, it would flip the cam around - in one position, the cam would allow the marble to pass in one direction, in the other position, it would cause the marble to drop through a hole and roll to the bottom of the ramp.

The Digi-Comp II followed on from the Digi-Comp I, which used an assortment of plastic slides, tubes, and bent metal wires to perform simple calculations.

See also

• Geniac

External links

• The Old Computer Museum - Collection of old analog, digital and mechanical computers.
• Extra-large recreation, video showing the multiplication of 13 x 3 on a scaled-up re-creation.

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This toy-related article is a stub. You can help Wikipedia by expanding it.v · Categories: Mechanical computers Educational toys Computer hardware stubs Toy stubs Wikimedia Foundation. 2010. Игры ⚽ Нужен реферат? Removal of Ratu Mara, 2000 Metaphysics of Morals Look at other dictionaries: Digi-Comp — may refer to: Digi Comp I, a mechanical toy computer without marbles Digi Comp II, a marble based mechanical toy computer This disambiguation page lists articles associated with the same title. If an internal link …   Wikipedia Digi-Comp I — The original DigiComp I A front view of the Digi Comp I version 2.0 The …   Wikipedia E.S.R., Inc. — E.S.R., Inc. was an American manufacturer of educational toys during the 1960s. The company’s founders included William H. Duerig and Irving J. Lieberman, both involved in missile research at Kearfott Guidance in New Jersey, and C. David Hogan,… …   Wikipedia Geniac — was an educational toy billed as a computer designed and marketed by Edmund Berkeley from 1955 through the 1960s. The name stood for Genius Almost automatic Computer. Basically a rotary switch construction set, the Geniac contained six perforated …   Wikipedia Think-a-Dot — The Think a Dot was a mathematical toy made by E.S.R., Inc. during the 1960s that demonstrated group theory. It had eight coloured disks on its front, and three holes on its top left, right, and center through which a ball bearing could be… …   Wikipedia digit- — digi(t) , digiti , digito élément, du lat. digitus, doigt . digit , digiti , digito ❖ ♦ Élément, du lat. digitus, signifiant « doigt » et entrant dans la composition de mots savants. Voir les comp. à …   Encyclopédie Universelle digito- — digi(t) , digiti , digito élément, du lat. digitus, doigt . digit , digiti , digito ❖ ♦ Élément, du lat. digitus, signifiant « doigt » et entrant dans la composition de mots savants. Voir les comp. à l ordre alphabétique …   Encyclopédie Universelle Fastblazer — Deutsche Versionen: T2000, T2500 und WorlBlazer Telebit war ein US amerikanischer Modem Hersteller, der besonders durch seine TrailBlazer[1] genannten Hochgeschwindigkeitsmodems bekannt wurde. Der TrailBlazer, eines der ersten Modems mit einer… …   Deutsch Wikipedia Netblazer — Deutsche Versionen: T2000, T2500 und WorlBlazer Telebit war ein US amerikanischer Modem Hersteller, der besonders durch seine TrailBlazer[1] genannten Hochgeschwindigkeitsmodems bekannt wurde. Der TrailBlazer, eines der ersten Modems mit einer… …   Deutsch Wikipedia T1000 — Deutsche Versionen: T2000, T2500 und WorlBlazer Telebit war ein US amerikanischer Modem Hersteller, der besonders durch seine TrailBlazer[1] genannten Hochgeschwindigkeitsmodems bekannt wurde. Der TrailBlazer, eines der ersten Modems mit einer… …   Deutsch Wikipedia 18+ © Academic, 2000-2024 Contact us: Technical Support, Advertising Dictionaries export, created on PHP, Joomla, Drupal, WordPress, MODx. Mark and share Search through all dictionaries Translate… Search Internet Share the article and excerpts Direct link … Do a right-click on the link above and select “Copy Link”