Automation System
One of the major benefits of using CAD in tool design is that:

there is better coordination in the materials-handling area
tool motions can be checked to see if there is interference between the tool and the object
product design represents approximately one-half the engineering costs
None of these
it simplifies the trial-and-error method

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

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

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