Automation System
The refresh-vector CRT uses which of the following techniques?

None of these
Creates images on the screen by scanning straight-line vectors between selected points.
The beam constantly travels across the screen to turn on/off a series of pixels.
Uses an electron gun to continuously flood the surface of the tube.
Makes changes on the image by increasing the anode voltage.

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Automation System
Trend analysis:

None of these
requires a very expensive system to implement
is used only in financial planning
can improve control system response
is a brand new concept

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