Debugging Methodology — question 3 of 10
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A board has a chain of 8 identical logic buffer stages wired in series. You confirm the signal is correct at the very first input and completely absent at the very last output. Instead of probing stage 1, then 2, then 3, and so on down the line, how would you localize the faulty stage in the fewest possible measurements? Roughly how many measurements does that take in the worst case?
This one resolves to a number. Give the value in the field below and your reasoning in the box — the number is checked exactly, by arithmetic.