Which term describes a volume production process in which machines are controlled by computers?

• A. Computer numerical control (CNC)
• B. Batch production
• C. Continuous flow
• D. Automated production

Answer: (D)

CNC is the term that captures computer-controlled machine tools used in high-volume production. When a computer directly governs the movements, speeds, and tool paths of lathes, mills, and similar equipment, parts can be produced with high precision and repeatability across many units. This focused use of a computer to control the toolwork is what defines Computer Numerical Control.

Automated production is broader and can include robotics and automated handling, but it doesn’t specify that the machines themselves are controlled by computer programs. Batch production and continuous flow describe how products are made or moved through a process, not how the machines are controlled. So the description fits CNC most closely.