1
GATE ECE 1999
MCQ (Single Correct Answer)
+1
-0.3
The Logical expression $$Y = A + \overline A B$$ is equivalent to
A
y = AB
B
y = $$\overline A $$ B
C
y = $$\overline A $$ + B
D
y = A + B
2
GATE ECE 1998
MCQ (Single Correct Answer)
+1
-0.3
The K-map for a Boolean function is shown in figure. The number of essential prime implicants for this function is GATE ECE 1998 Digital Circuits - Boolean Algebra Question 29 English
A
4
B
5
C
6
D
8
3
GATE ECE 1998
MCQ (Single Correct Answer)
+1
-0.3
Two 2' s complement numbers having sign bits x and y added and the sign bit of the result is z. Then, the occurrence of overflow is indicated by the Boolean function.
A
xyz
B
$$\overline x $$ $$\overline y $$ $$\overline z $$
C
$$\overline x $$ $$\overline y $$ z + x y $$\overline z $$
D
xy + yz + zx
4
GATE ECE 1990
MCQ (Single Correct Answer)
+1
-0.3
The number of Boolean functions that can be generated by n variable is equal to:
A
2$$^n$$
B
$${2^2}^n$$
C
2$$^{n - 1}$$
D
2$$^{n + 1}$$
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