A logic probe is again applied to the pins of a 7421 IC with the follo – McqOptions

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1.	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» E.

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