What is CNC? What do you think of this problem? As for a newcomer to hardware process, he must want to know its full name and definition. Start easy, this will be the quickest way to know about CNC. “CNC” also known as Computer Numerical Control, literally, it seems possible to say that the intelligent computer controls the machines to machining. In other words,when you understand what is CNC machine(Computer) and how(Numerical) to CNC machining(Control), you’ll get the answer about the title. Getting to understand the whole meaning of CNC is really difficult unless you several years of experience on this. A complete CNC center include many kinds of machines, like turning center,milling machine, Lathes and so on. Professional Engineer will choose different machines and machining methods according to different materials and products. In short,a computer converts the design produced by Computer Aided Design drawing (CAD), into programming. The programming can be considered to be the coordinates of a graph and they control the movement of the cutter. In this way the computer controls the cutting and machining of the material to finish a production.