industrial process in which tools operate by a digital processor which supervises the work
Numerical control or numerically controlled (NC)
machine tools are machines that are automatically operated by commands that are received by their processing units. NC machines were first developed soon after
World War II and made it possible for large quantities of the desired components to be very precisely and efficiently produced (
machined) in a reliable repetitive manner. These early machines were often fed instructions which were punched onto
paper tape or
punch cards. In the 1960s, NC machines largely gave way to
CNC, or
computer numerical control, machines. (
GE had its NC 550 workhorse for many years until they came out with their first CNC (model 1050) in August 1974.)
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