Automation System
A process controller:

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

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Automation System
Semiconductor devices:

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

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