Meaning | A small machine that is used for mathematical calculations. |
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Synonym | calculating machine |
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Narrower | Napier's bones, Napier's rods | A set of graduated rods formerly used to do multiplication and division by a method invented by John Napier |
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abacus | A calculator that performs arithmetic functions by manually sliding counters on rods or in grooves |

adder | A machine that adds numbers |

adding machine, totalizer, totaliser | A calculator that performs simple arithmetic functions |

counter, tabulator | A calculator that keeps a record of the number of times something happens |

hand calculator, pocket calculator | A calculator small enough to hold in the hand or carry in a pocket |

quipu | calculator consisting of a cord with attached cords |

subtracter | A machine that subtracts numbers |

Broader | machine | Any mechanical or electrical device that transmits or modifies energy to perform or assist in the performance of human tasks |
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Spanish | calculadora, calculador |
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Catalan | calculadora |
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Verbs | calculate | make a mathematical calculation or computation |
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