Automation System
Numerical control:

is a method for producing an exact number of parts per hour
None of these
applies only to milling machines
All of these
is a method for controlling the operation of a machine by means of a set of instructions

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Automation System
A common data base is one requisite for converting CAD and CAM to CIM. Another is that:

the user must have access to both hardware and software
technical assistance must be provided to the user.
there should be a common 3-D part description system.
None of these
the system must make provision for new techniques.

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Automation System
Today, programmable controllers:

All of these
can be cost effective even when replacing just a few relays
None of these
are more powerful then the first controllers on the market
are relatively low cost compared with the original digital equipment available for industrial control

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