adding machine

calculator, machine that makes calculations

See adding machine (disambiguation) for other uses of this term. An adding machine is a type of calculator, usually specialized for bookkeeping calculations. In the United States, very old adding machines were usually built to read in dollars and cents.It was invented by the French mathematician Blaise Pascal in 1642.
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Noun
1. a calculator that performs simple arithmetic functions
(synonym) totalizer, totaliser
(hypernym) calculator, calculating machine
(part-holonym) cash register, register