Automation System
The computer graphics system called SKETCHPAD was demonstrated at

University of Aston, Birmingham, 1960
Cranfield Institute of Technology, London, 1962
Imperial college of Science and Technology, London, 1973
Massachusetts Institute of Technology in 1963
None of these

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Automation System
Straight-line operations:

must be parallel to one of the axes of the coordinate system
can include diagonal cuts if they aren't curved
None of these
must be limited to two per workpiece
All of these

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