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 user must have access to both hardware and software
None of these
the system must make provision for new techniques.
technical assistance must be provided to the user.

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Automation System
A sequence controller:

is no longer in widespread use
is difficult to program
None of these
is a mechanical only controller
performs on/off control functions in relation to time.

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