What do a.m. and p.m. stand for?

adding machine

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 of adding machine
1870-75, Americanism Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for adding machine
  • Ability to operate an adding machine and calculator.
  • Run an adding machine tape of all checks and record this total on the deposit ticket.
  • Measure the distance traveled using adding machine tape.
  • Use inventory forms and adding machine tapes as the only evidence for your inventory.
  • For paper forms, you must calculate these amounts manually and attach adding machine tape showing the calculations.
  • Ability to operate a keyboard, adding machine, and calculator.
  • Students are to make a pattern on the adding machine tape.
  • Ability to operate a typewriter, adding machine and calculator.
  • If you don't have computer access, you could have them use adding machine tape to make the timeline themselves.
  • Include an adding machine tape or some type of listing showing how this total was obtained.
British Dictionary definitions for adding machine

adding machine

a mechanical device, operated manually or electrically, for adding and often subtracting, multiplying, and dividing
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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