Computer Numerical Control (CNC) is a technology used to automate machine tools through the use of computers. It allows for precise control of machinery such as lathes, mills, and routers by interpreting a computer program that dictates the movements and operations of the machine. This process enhances accuracy and efficiency in manufacturing. CNC systems utilize a programming language called G-code, which specifies the instructions for the machine. By converting digital designs from software like CAD (Computer-Aided Design) into physical products, CNC technology plays a crucial role in various industries, including automotive, aerospace, and woodworking.