What does the acronym "CNC" stand for in machining?

The acronym "CNC" stands for "Computer Numerical Control." This term refers to a method used in manufacturing where computers are programmed to control machine tools. CNC technology allows for greater precision, efficiency, and complexity in machining processes compared to traditional manual methods.

In CNC systems, a computer interprets a programmed instruction (typically using G-code or M-code) to control the movement of tools and equipment, enabling intricate operations such as milling, turning, and cutting. This technology is widely used in various industries due to its ability to produce complex parts with high accuracy and repeatability.

The other options do not accurately capture the essence of CNC machining. They either suggest incorrect meanings or false implications about the nature of the technology, which is specifically focused on computerized control of numerical inputs and machine operations rather than the terms suggested in those alternatives.