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Questions from Logic Probe #2

1. Touch the probe to the 5V source. What happens?
        A line on the 7-segment display lights up
2. Touch the probe to the source ground. What happens?
        Nothing happens
3. Can you decide what would happen if a digital pulse were applied to the probe?
        The same thing would happen...the probe would be true because a pulse is a pulse....whether analog or digital
4. Explain how this would work?
        I don't really know

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