Automation System
A flexible manufacturing system may be:

None of these
All of these
expensive to alter
an automated assembly line
very difficult to change when new products are introduced

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

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

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