calculator (ˈkælkjʊˌleɪtə) n 1.(Mathematics) a device for performing mathematical calculations, esp an electronic device that can be held in the hand 2.a person or thing that calculates 3.(Mathematics) a set of tables used as an aid to calculations ...
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Related to calculator:Scientific calculator cal·cu·la·tor (kăl′kyə-lā′tər) n. 1.One that calculates, as: a.An electronic or mechanical device for the performance of mathematical computations. b.A person who operates such a machine or otherwise makes calculations. ...
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In 1872, Frank Baldwin in theU.S.A.invented the pin-wheel calculator, which was also independently invented two years later by W.T. Odhner inSweden. The Odhner models, and similar designs from other companies, sold many thousands into the 1970s. ...