Virtual gate: Digital

Question

Comments

1 0 A2 A1 A1'
Is it correct

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Ans was given as D.

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I guess options are not correct,

solution is  $\text{1, 0,  A2,  A1, } \overline{A1}$

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Yes,options are wrong.

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https://gateoverflow.in/264/gate2005-62

@Ram Swaroop @!KARAN

Have you proceeded in a similar manner like the one given in the link?

Please if possible can either of you elaborate your approach how you reached to this answer. 

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@Shaik sir, can you please tell how to proceed with such question? If we compare from previous year even the clock is negative edged here.

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Sorry i didn't seen that, it is negative edge.

I will be back

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In this example, clock is independent, so it doesn't effect the result.

For understanding negative clock type question : https://gateoverflow.in/222154/made-easy-test-series

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@Shaik sir, In the previous year question does the clock is not independent? Or is it dependent?

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Clk doesn't depend upon the variables except clock input, so it's independent.

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CLK	A	X	Y
1	A4	0	A4.0+1.1=1
2	A3	0	A3.0+0.1=0
3	A2	1	A2.1+1.0=A2
4	A1	1	A1.1+A2’.0=A1
5	A0	0	A0.0+A1’.1=A1’

Initially Q=0 & where Y=AX+Q’X’

@Shaik sir please verify whether we have to proceed this way or is there a mistake?

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Sometimes converting into eqn doesn't work. ( don't have any examples right now. )

But similar approach you can follow.

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OKAY. Thankyou sir.