Automation System
A flip-flop:

is a sequential logic device
is a combinational logic device
remembers what was previously stored in it
None of these
(a) and (c)

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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.
None of these
is expensive because it is sophisticated and make demands on the power and resources of the computer.
All of these
is used for interactive Graphics

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