Consider the circuit shown below. In a certain steady state, the line Y is at…

GATE · 1999 · CS · Question 2 subparts

Consider the circuit shown below. In a certain steady state, the line Y is at ‘1’. What are the possible values of A, B, and C in this state?

Three AND gates in a feedback chain. Output Y returns to one input of the first gate; A is its other input. The first output and B enter the second gate. Its output and C enter the third gate, whose output is Y.

A.
A = 0, B = 0, C = 1
B.
A = 0, B = 1, C = 1
C.
A = 1, B = 0, C = 1
D.
A = 1, B = 1, C = 1

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