Automation System
The use of specialized workstations:

provides limited growth potentials for 3-D
reduces the host computer workload
reduces the host computer workload and allows more users
None of these
has a high cost-performance tradeoff

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Automation System
The SKETCHPAD system

consisted of an cathode-ray oscilloscope driven by a Lincoln Tx2 computer where by graphical information was displayed on the screen.
All of these
None of these
is used for interactive Graphics
is expensive because it is sophisticated and make demands on the power and resources of the computer.

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Automation System
What is proportional control?

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

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