SOME HISTORY AND BACKGROUND (1915)
What is the difference between a Computer and a Calculator? One the most satisfactory definition states, "An automatic computer is a machine that manipulates symbols in accordance with given rules in a predetermined and self-directed manner.."
The most significant word here undoubtedly is "self directed". Any calculating device whether it be an abacus or an adding machine must be other-directed, that is, man directed...
By Darwyn F. Kelley
Computer Historian
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