Automation System
Numerical control:

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

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

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

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