WebAdding Machine Supplies. Well, at Ribbons Unlimited we don't go as far back as the counting boards and the abacus, but we do carry spools that fit some. pretty old vintage adding machines from the past. In the beginning, the older model machines had no display, some had a hand crank and most could only count up to 99.99. WebAug 21, 2024 · August 21, 2024. An early adding machine, c. 1890, invented by William Seward Burroughs, grandfather of the beat writer. National Museum of American History. Today every phone is a calculator, but ...
Burroughs Corporation - University of Minnesota
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Burroughs Corporation - Wikipedia
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