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Ready reckoners [printed multiplication table book]

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2 Author(s)
Williams, B.O.B. ; Birkbeck Coll., Univ. of London, UK ; Johnson, R.G.

Multiplication is vital to the conduct of commerce but is time-consuming and error-prone. Among the many aids developed over two centuries to address these issues, the most widely used was the ready reckoner, a printed book containing tables of precalculated multiplication results that could be useful in business transactions.

Published in:

Annals of the History of Computing, IEEE  (Volume:27 ,  Issue: 4 )