Automation System
The difference between CAD and CAM is that CAD software is directed at product design while CAM software is:

concerned with production and control of tool design
concerned with management programs
specifically for PC-board design
None of these
designed for communications

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Automation System
Microcomputer-based control sys-tems

will tend to increase in cost.
will just keep their present capability
will have more standard industrial application software available in the future.
All of these
None of these

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Automation System
Digital signals:

have a sinusoidal shape.
can have three possible levels
have a frequency measured in units of hertz
are assigned values of 1 or 0 depending on the voltage level
None of these

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Automation System
What is proportional control?

All of these
The gain is independent of offset error.
The controller output varies continuously over a range
It has a discrete output for each error value
None of these

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