1
GATE EE 2002
MCQ (Single Correct Answer)
+2
-0.6
For the circuit shown in Fig. the Boolean expression for the output $$Y$$ in terms of inputs $$P,$$ $$Q,$$ $$R$$ and $$S$$ is GATE EE 2002 Digital Electronics - Logic Gates Question 7 English
A
$$\overline P + \overline Q + \overline R + \overline S $$
B
$$P+Q+R+S$$
C
$$\left( {\overline P + \overline Q } \right)\left( {\overline R + \overline S } \right)$$
D
$$(P+Q) (R+S)$$
2
GATE EE 1999
MCQ (Single Correct Answer)
+2
-0.6
For a flip-flop formed from two $$NAND$$ gates as shown in figure. The unusable state corresponds to GATE EE 1999 Digital Electronics - Logic Gates Question 9 English
A
$$X = 0,\,\,Y = 0$$
B
$$X = 0,\,\,Y = 1$$
C
$$X = 1,\,\,Y = 0$$
D
$$X = 1,\,\,Y = 1$$
3
GATE EE 1999
MCQ (Single Correct Answer)
+2
-0.6
The logic function $$f = \overline {\left( {x.\overline y } \right) + \left( {\overline x .y} \right)} $$ is the same as
A
$$f = \left( {x + y} \right)\left( {\overline x + \overline y } \right)$$
B
$$f = \overline {\left( {\overline x + \overline y } \right) + \left( {x + y} \right)} $$
C
$$f = \left( {\overline x .\overline y } \right) + \left( {\overline x .\overline y } \right)$$
D
None of $$(A),(B),(C)$$
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