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Related to adding machine: staples
adding machine:see calculatorcalculator
or calculating machine,
device for performing numerical computations; it may be mechanical, electromechanical, or electronic. The electronic computer is also a calculator but performs other functions as well.
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adding machine[′ad·iŋ mə‚shēn]
A device which performs the arithmetical operation of addition and subtraction.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.