In strict adherence to the terminology, there is a difference in the meaning of the abbreviations NC and CNC. The NC stands for the older and original Numerical Control Technology, whereby the abbreviation CNC stands for newer Computerized Numerical Control Technology, a modern version of its older relative. However, in practice, the CNC is the preferred abbreviation. To clarify the proper usage of each term we can tell the major difference between the NC and CNC systems.
Both systems perform the same tasks, namely manipulation of data for the purpose of machining a part. In both cases, the internal design of the control system contains the logical instructions that process the data. At this point the similarity ends.
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