Automation System
What prevents a robotic instrument from running into other objects?

sensory devices
negative image
functional manipulators
None of these
memory

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

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

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