Miniaturization of control system of Dongguan NC machining plant miniaturization of NC system is convenient to combine mechanical and electrical devices. At present, VLSI components and multilayer printed circuit boards are mainly used, and the three-dimensional installation method is adopted, so that the electronic components can be installed with high density and the occupied space of the system can be reduced on a large scale. Dongguan numerical control processing plant uses new color liquid crystal thin display to replace the traditional cathode ray tube, which will further miniaturize the numerical control operating system. In this way, it can be easily installed on the machine equipment, and it is more convenient for the operation of CNC machine tools.