Automation System
Vision sensors:

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

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

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

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