Automation System
The computer graphics system called SKETCHPAD was demonstrated at

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

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Automation System
Straight-line operations:

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

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