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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Automation System
Ergonomics refers to:

the human aspect of the environment around the workstation as well as the workstation itself
the level of involvement the operator has with the workstation
the technology involved in the workstation itself
the cost relationship of the workstation versus productivity
None of these

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