Numerical Control System is the abbreviation of Numerical Control System, which performs some or all of the Numerical Control functions according to the Control program stored in the computer memory, and with the interface circuit and servo drive device of the special computer system. Through the use of digital instructions composed of numbers, letters and symbols to achieve the action control of one or more mechanical equipment, it is usually controlled by the position, angle, speed and other mechanical quantities and switching quantities.　

There are many kinds of numerical control systems in the world with different forms, and each has its own characteristics in structure. These structural features come from the basic requirements of system initial design and the engineering design ideas of hardware and software. For different manufacturers, based on historical development factors and the impact of complex factors vary from place to place, in the design of ideas may also be different.　

Although our country's numerical control system has made great development, but our country is good, more than 90% of the numerical control system supporting numerical control machine tool are foreign products, especially for the national defense industry urgently needs good, numerical control machine tool, good numerical control system is the key factor that determines the performance, function, reliability and cost of machine tool equipment, but foreign countries still block our country, which has become a bottleneck that restricts the development of numerical control machine tool in our country.　

The control tool moves the precise coordinate position of the workpiece from one machining point to another, but does not control the track of the movement between the points, and does not make any machining during the movement. The equipment of this kind of system includes NC drilling machine, NC coordinate boring machine and NC punching machine, etc. .