Direct numerical control (DNC), also known as distributed numerical control (also DNC), is a common manufacturing term for networking CNC machine tools. On some CNC machine controllers, the available memory is too small to contain the machining program (for example machining complex surfaces), so in this case the program is stored in a separate co...
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http://en.wikipedia.org/wiki/Direct_numerical_control
(from the article `automation`) ...over telecommunications lines from a central computer to individual machine tools in the factory, thus eliminating the use of the punched tape ... When several CNC machine tools receive instructions for machining from a large central computer that stores and processes operational procedures, ... [2 ...
Found on
http://www.britannica.com/eb/a-z/d/53
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