Logic Gates – 96

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96. A logic probe is again applied to the pins of a 7421 IC with the following results. Is there a problem with the circuit and if so, what is the problem?

(a) Pin 6 should be ON.
(b) Pin 8 should be ON.
(c) Pin 8 should be pulsing.
(d) no problem

Answer
Answer : (d)
Explanation
Explanation : No answer description available for this question. Let us discuss.
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