1
GATE ECE 2007
MCQ (Single Correct Answer)
+2
-0.6
The following binary values were applied to the X and Y inputs of the NAND latch shown in the figure in the sequence indicated below: X=0, Y=1; X=0, Y=0; X=1, Y=1. The corresponding stable P, Q outputs will be GATE ECE 2007 Digital Circuits - Sequential Circuits Question 26 English
A
P = 1, Q = 0; P = 1, Q = 0; P = 1, Q = 0 or P = 0, Q = 1
B
P = 1, Q = 0; P = 0, Q = 1; or P = 0, Q = 1; P = 0, Q = 1
C
P = 1, Q = 0; P = 1, Q = 1; P = 1, Q = 0 or P = 0, Q = 1
D
P = 1, Q = 0; P = 1, Q = 1; P = 1, Q = 1
2
GATE ECE 2006
MCQ (Single Correct Answer)
+2
-0.6
Two D-flip-flops, as shown below, are to be connected as a synchronous counter that goes through the following Q1Q0 sequence $$00 \to 01 \to 11 \to 10 \to 00 \to ......$$
The inputs D0 and D1 respectively should be connected as
GATE ECE 2006 Digital Circuits - Sequential Circuits Question 37 English
A
$$\overline {{Q_1}} \,and\,\ {{Q_0}} $$
B
$$\overline {{Q_0}} \,and\,\ {{Q_1}} $$
C
$$\,\overline {{Q_1}} {Q_0}\,and\,\overline {{Q_1}} {Q_0}$$
D
$$\,\overline {{Q_1}} \overline {{Q_0}} \,and\,{Q_1}{Q_0}$$
3
GATE ECE 2004
MCQ (Single Correct Answer)
+2
-0.6
In the modulo-6 ripple counter shown in the figure, the output of the 2-input gate is used to clear the J-K flip-flops. The 2-input gate is GATE ECE 2004 Digital Circuits - Sequential Circuits Question 38 English
A
a NAND gate
B
a NOR gate
C
an OR gate
D
an AND gate
4
GATE ECE 2003
MCQ (Single Correct Answer)
+2
-0.6
A 4 bit ripple counter and a 4 bit synchronous counter are made using flip-flops having a propagation delay of 10 ns each. If the worst case delay in the ripple counter and the synchronous counter be R and S respectively, then
A
R = 10ns, S = 40ns
B
R = 40ns, S = 10ns
C
R = 10ns, S = 30ns
D
R = 30ns, S = 10ns
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