Automation System
A flip-flop:

is a sequential logic device
remembers what was previously stored in it
None of these
is a combinational logic device
(a) and (c)

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Automation System
A sequence controller:

performs on/off control functions in relation to time.
is difficult to program
is no longer in widespread use
is a mechanical only controller
None of these

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Automation System
An operating system:

can help reduce software development time
provides ability for other programmers to understand the software structure
is useless in most control applications
None of these
All of these

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