Automation System
Direct Numerical Control means:

using one computer to control several machines
complete elimination of a need for a human operator.
eliminating computers from the manufacturing process
None of these
using several computers to control one large machine

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Automation System
Semiconductor devices:

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

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