Automation System
Operator interaction directly with the CRT is accomplished via:

a touch terminal
None of these
a stylus
vector scanning
a digitizing tablet

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

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

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