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Description: | Addo-x (Maker's logo on the front of the machine). Mod. 12-34-30 (model of machine punched into aluminium strip on back of the calculator) V87438 (serial number engraved on aluminium strip on back of the machine). MANU Addo AB. circa 1955 Malmo, Sweden. DES after LEIBNIZ,Gottfried,Wilhelm. 1671 Mainz, Germany. DES after THOMAS de Colmar, Charles,Xavier,Chevalier. 1818 44 rue Chateaudun, Parios, France. DES after ODHNER,Willgot,Theophil. 1874 St Petersburg, Russia This is an Addo-X model 12-341-30 an unusual version of the model 341 Step-O-matic first introduced in 1950. It is a, repeat addition, pinwheel type calculator with a full 10 digit keyboard input and no revolutions register It is a print only machine that has a 12 digit output but has no accumulator register. Curiously this machine has a typewriter carriage, which was used on Addo's book keeping machines. | License: | http://www.hmag.gla.ac.uk/spirit/rights/ | Publisher: | Hunterian Museum and Art Gallery, University of Glasgow | Rights holder: | Hunterian Museum and Art Gallery, University of Glasgow | Subjects: | SCIENTIFIC COLLECTION : | Source: | Hunterian Museum | Creator: | Hunterian Museum and Art Gallery, University of Glasgow | Identifier: | http://www.huntsearch.gla.ac.uk/cgi-bin/... | Language: | en-GB | Go to resource |
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