Automation System
Semiconductor devices:

All of these
have a very short infant mortality period
are less reliable than electro¬mechanical components
usually have a very short MTBF (mean time between failure)
None of these

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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
Cranfield Institute of Technology, London, 1962
None of these
University of Aston, Birmingham, 1960

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