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

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

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

None of these
results in a binary code as the final output
both (b) and (c)
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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Automation System
Semiconductor devices:

None of these
usually have a very short MTBF (mean time between failure)
have a very short infant mortality period
All of these
are less reliable than electro¬mechanical components

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