从1 9 5 2年第一台数控机床问世后，数控系统已经先后经历了两个阶段

Since the advent of the first CNC machine tool in 1952, the CNC system has experienced two stages and six generations of development. The six generations refer to electronic tubes, transistors, integrated circuits, small computers, microprocessors and industrial control-based Universal 9NN system for PP machines. Among them, the first three generations are the first stage, which is called hardware connection numerical control, referred to as NN system; the latter three generations are the second stage, which is computer software numerical control, referred to as SNN system.

Since the first CNC machine tool came out in 1952, the CNC system has experienced two stages and six generations of development. The six generations refer to electronic tubes, transistors, integrated circuits, minicomputers, microprocessors and general 9nn system based on industrial PP computer. Among them, the first three generations are the first stage, which is called hardware connected NC, or NN system for short; The latter three generations are the second stage, taking computer software numerical control, referred to as SNN system for short.

Since the first numerical control machine tool came out in 1 9 5 2, the numerical control system has experienced two stages and six generations of development. The six generations refer to electronic tubes, transistors, integrated circuits, minicomputers, microprocessors and general 9NN systems based on industrial PP machines. Among them, the first three generations are the first stage, which is called hardware connection numerical control, or NN system for short; The third generation is the second stage, which is numerically controlled by computer software, referred to as SNN system for short.