Automation System
A microprocessor is:

None of these
an integrated circuit
All of these
relatively inexpensive
controlled by a program

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Automation System
D/A (digital to analog) conversion:

both (b) and (c)
None of these
must be fed through a filter to reproduce the original signal accurately
has to be sampled at 1/2 the highest input frequency
results in a binary code as the final output

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Automation System
What is proportional control?

The gain is independent of offset error.
It has a discrete output for each error value
None of these
All of these
The controller output varies continuously over a range

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