Automation System
A process controller:

All of these
can interface to digital and analog I/O
can solve a PID process control equation easily
None of these
is useful in a continuous process control application

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Automation System
Semiconductor devices:

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

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