Automation System
A microprocessor is:

relatively inexpensive
an integrated circuit
controlled by a program
All of these
None of these

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

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Automation System
D/A (digital to analog) conversion:

None of these
has to be sampled at 1/2 the highest input frequency
both (b) and (c)
results in a binary code as the final output
must be fed through a filter to reproduce the original signal accurately

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