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manual calculator

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  • calculator — /kal kyeuh lay teuhr/, n. 1. a person who calculates or computes. 2. Also called calculating machine. a small electronic or mechanical device that performs calculations, requiring manual action for each individual opertion. 3. a person who… …   Universalium

  • Curta calculator — Curta (Type I) mechanical calculator shown in the operational position (left hand). The crank is turned with the right hand. The Curta is a small, hand cranked mechanical calculator introduced in 1948. It has an extremely compact design: a small… …   Wikipedia

  • Monroe Calculator Company — The Monroe Calculator Company was a leading maker of adding machines and calculators founded in 1912 by Jay R. Monroe and now known as Monroe Systems for Business. The company was also known as Monroe Calculating Machine Company, Monroe THE… …   Wikipedia

  • Wheel calculator — A wheel calculator is made of concentric paper or plastic discs, used to make calculations involving time periods. They have applications in pregnancy (to calculate the due date)[1] and insurance. Online wheel calculator An Internet web site[2]… …   Wikipedia

  • Desk calculator — dc (ein Akronym für desk calculator) ist ein Rechenprogramm für Unix respektive Unix Derivate. Es nutzt das Prinzip der umgekehrten polnischen Notation und ist eines der ältesten Unix Tools sogar älter als die Programmiersprache C. In der Praxis… …   Deutsch Wikipedia

  • Owners manual — An owners manual (also called an instruction manual) is an instructional book or bookletthat is supplied with almost all technologically advanced consumerproducts such as vehicles, appliances and computer peripherals.Information contained in the… …   Wikipedia

  • Pinwheel calculator — Pinwheel calculators were invented independently by Frank S. Baldwin in the USA (1872) and Wilgott Theophil Odhner in Russia (1874). They reduced both the cost and the size of a mechanical calculator on which one could easily do the four basic… …   Wikipedia

  • Aiken IBM Automatic Sequence Controlled Calculator Mark I — Harvard Mark I Pour les articles homonymes, voir Harvard et Mark I. Côté droit. L’IBM …   Wikipédia en Français

  • Course Setting Bomb Sight — The CSBS Mk. IX mounted in a Fairey Battle. The bomb aimer is sighting through the white ring shaped backsights to the pin shaped foresights (just visible against the armoured cable) and holding the bomb release switch in his right hand. The… …   Wikipedia

  • History of computing hardware — Computing hardware is a platform for information processing (block diagram) The history of computing hardware is the record of the ongoing effort to make computer hardware faster, cheaper, and capable of storing more data. Computing hardware… …   Wikipedia

  • Slide rule — For other uses, see Slide rule (disambiguation). A typical ten inch student slide rule (Pickett N902 T simplex trig). The slide rule, also known colloquially as a slipstick,[1] is a mechanical analog computer. The slide rule is used primarily for …   Wikipedia

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