CNC is the automated control of machining tools (such as drills, lathes, mills, and 3D printers) using a computer. A CNC machine processes a piece of material (metal, plastic, wood, ceramic, or composite) to meet specifications by following a coded programmed instruction and without a manual operator directly controlling the machining operation.
This book may give you:

• Types Of CNCMachine: What Does CNC Machinery Mean?
• CNC Milling Machine: What Is An Example Of A CNC Machine
• CNC Machine Wood: How Many Types Of CNC Machines?