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In a 3-bit asynchronous down counter, at the first negative transition of the clock, the counter content becomes ____________(a) 000(b) 111(c) 101(d) 010The question was posed to me in unit test.This interesting question is from Asynchronous Down Counter topic in portion Counters of Digital Circuits

Answer»

Correct choice is (c) 101

The best I can explain: Since, in the down counter, the counter CONTENT is decremented by 1 for EVERY NEGATIVE transition. HENCE, in a 3-bit asynchronous down counter, at the first negative transition of the clock, the counter content becomes 101.



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