CNC, or Computer Numerical Control, is a technology used in manufacturing that automates the control of machines through computer programming. This process allows for precise and repeatable operations, making it essential in industries such as aerospace, automotive, and metalworking. By using CNC machines, manufacturers can create complex parts with high accuracy and efficiency. The technology encompasses various types of machines, including CNC lathes and CNC routers, which are programmed to perform specific tasks, reducing human error and increasing production speed.