A machine is a thing that helps a person to do something by using or changing energy. Many machines have moving parts, and usually increase force or change the direction of force.

The advent of the CNC lathe or more properly the CNC Turning Centre has blurred these distinct levels of production to some extent. Modern practice is moving towards the use of CNC controls such as a CNC turning center. Facing is a related term. It involves moving the cutting tool across.

The abbreviation CNC stands for computer numerical control, CNC Machine refers
specifically to a computer "controller" that reads G-code instructions and drives the machine tool, a powered mechanical device typically used to fabricate metal components by the selective removal of metal. CNC does numerically directed interpolation of a cutting tool in the work envelope of a machine.

Electronic systems are used to perform a wide variety of tasks.