Automation System
One advantage of a PC in industrial control is that it:

is very difficult for the inexperienced programmer to understand
is unreliable because there are no moving parts
has a reliable long life compared to relay logic
None of these
All of these

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Automation System
If the transient response of a system is overdamped:

the value of the output exceeds the value of the input at times during the transient period.
None of these
the value of the output never stabilizes.
All of these
the value of the output never exceeds the value of the input during the transient period.

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Automation System
The SKETCHPAD system

All of these
is expensive because it is sophisticated and make demands on the power and resources of the computer.
None of these
is used for interactive Graphics
consisted of an cathode-ray oscilloscope driven by a Lincoln Tx2 computer where by graphical information was displayed on the screen.

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