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

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Automation System
Programmable controllers:

are widely used in many different industries
cannot perform functions other than relay logic
(a) and (c) above
are programmed using relay ladder logic
None of these

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