The History of CNC
Article Source/Subject: Wikipedia - (CNC) Computer Numerical Control
Article Contents: History - Earlier forms of automation - Cams - Tracer control - Servos and selsyns - Parsons and the invention of NC - Enter MIT - MIT's machine - Proliferation of NC - CNC arrives - CAD meets CNC - Proliferation of CNC - Today - Description - Tools with CNC variants - References - Notes - Bibliography.
Article Snippet: "Numerical control (NC) refers to the automation of machine tools that are operated by abstractly programmed commands encoded on a storage medium, as opposed to manually controlled via handwheels or levers or mechanically automated via cams alone. The first NC machines were built in the 1940s and 50s, based on existing tools that were modified with motors that moved the controls to follow points fed into the system on paper tape. These early servomechanisms were rapidly augmented with..."
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