It was in 1947 when numerical control was born. It began when john C. Parsons of the parsons corporation Traverse city Michigan (a manufacturer of helicopter rotor blades) could not make his templates fast enough so he invented a way of coupling computer equipment with a jig borer. Mr. Parsons used punched cards to operate his digit Ron system.
1949 was the year of another "Urgent need". The US Air Material Command realized that parts for its planes and missiles were becoming more complex. Also as the design were constantly improved, changes in the drawing were frequently made. Thus in their search for methods of faster production, an air force study contract was awarded to the Parsons Corporation. The servo mechanisms laboratory of the Massachusetts Institute of Technology (MIT) was the subcontractor.
In 1951, MIT took over the complete job, and in 1952 the prototype of today's NC machine, a modified Cincinnati Hydrtel Milling Machine, was successfully demonstrated. The term numerical control was originated at MIT.
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