Automation System
A continuous process is:

None of these
self-contained in that raw materials enter the process and an identifiable products exits the process.
used only with analog controllers.
used only for simple tasks
one that never shuts down

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Automation System
A process controller:

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

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Automation System
Vision sensors:

All of these
will more closely match the capabilities of the human eye
will remain very costly
can not improve much in the next decade
None of these

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