Automation System
The SKETCHPAD system

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

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Automation System
An encoder:

converts a binary number to a decimal number.
None of these
converts an input to a binary number
is used to send telegraph signals
can have only four keys

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Automation System
Trend analysis:

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

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