Numeric control machines have been in existence since the 1950s, getting their instructions from punched tape. The idea eventually caught on with manufacturers, but each wanted to create its own language. In the 1960s, a standard language, G-Code, was adopted and standardized for part programs. At the same time, computer aided design arrived on the scene, as did a few affordable mini-computers. As the economy slowed and labor costs rose in the 1970s, companies gravitated toward computer numeric control machining.
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