Automation System
The program counter:

None of these
counts the number of instructions that have been executed
is where arithmetic is done in a computer.
decides which program to run
contains the address of the next instruction to be executed

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Automation System
A discrete parts process is:

normally a repetitive series of operations
often encountered in manufacturing
the same as a continuous process except a different controller must be used
(b) and (c)
None of these

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

results in a binary code as the final output
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

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Automation System
An operating system:

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

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Automation System
Programmable controllers:

(a) and (c) above
None of these
are widely used in many different industries
cannot perform functions other than relay logic
are programmed using relay ladder logic

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