Automation System
The computer graphics system called SKETCHPAD was demonstrated at

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

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Automation System
Light sensors:

work in direct sunlight
None of these
come in a wide variety of mounting styles
never use infrared light as light source
cannot be used a s limit switches.

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Automation System
A discrete parts process is:

None of these
normally a repetitive series of operations
often encountered in manufacturing
(b) and (c)
the same as a continuous process except a different controller must be used

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