Automation System
Computer-based controllers:

(a) and (c) above
are very flexible
are very difficult to change
should be built in a modular fashion wherever possible
None of these

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Automation System
The computer graphics system called SKETCHPAD was demonstrated at

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

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