adding-machine

adding machine

noun
a machine capable of adding numbers and sometimes capable of performing the other arithmetic functions of subtraction, multiplication, and division: such machines are now obsolescent, having been replaced in most applications by electronic calculators.

Origin:
1870–75, Americanism

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World English Dictionary
adding machine
 
n
a mechanical device, operated manually or electrically, for adding and often subtracting, multiplying, and dividing

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