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can anybody tell me when does AND gate take inputs (1,1) and when does Y go from 0 to 1.
assume Y=1 initially
thanks!

1 Answer

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Intially A=0 B=0 At t=0

propagation delay of AND  gate = 20ns  and Intially Y =1

so At t=20ns then value of Y will become 0 from 1 .

At t=10 A=1 B=1 and Y=0

so after 20 ns , At t=30ns value of Y =1

so at t=30 value of Y will change from 0 to 1

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