Automation System
The program execution time:

will vary depending on the language used
All of these
None of these
cannot be changed once the program is written
must be slower than the fastest mechanical operation that is to be controlled

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

has to be sampled at 1/2 the highest input frequency
results in a binary code as the final output
must be fed through a filter to reproduce the original signal accurately
both (b) and (c)
None of these

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Automation System
The program counter:

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

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