Automation System
Time proportioning control:

can be used on a PM550 programmable process controller
is less efficient than normal PID control
cannot use a TM990 micro¬computer
None of these
a and b above.

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

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

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Automation System
High-level languages:

None of these
cannot be used with automatic systems.
require knowledge of the computer design
are "procedure-oriented"
are very difficult to use

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