1
GATE CSE 2019
Numerical
+2
-0.67
What is the minimum number of 2-input NOR gates required to implement a 4-variable function function expressed in sum-of-minterms form as

f = Σ(0, 2, 5, 7, 8, 10, 13, 15)?

Assume that all the inputs and their complements are available.
Your input ____
2
GATE CSE 2018
Numerical
+2
-0
Consider the minterm list form of a Boolean function 𝐹 given below. $$F\left( {P,Q,R,S} \right) =$$ $$\sum {m\left( {0,2,5,7,9,11} \right)}$$ $$+ \,\,d\left( {3,8,10,12,14} \right)$$

Here, $$m$$ denotes a minterm and $$d$$ denotes a don’t care term. The number of essential prime implicants of the function $$F$$ is ______.

Your input ____
3
GATE CSE 2012
MCQ (Single Correct Answer)
+2
-0.6
What is the minimal form of the Karnaugh map shown below? Assume that $$X$$ denotes a don’t care term.
A
$$\overline {bd}$$
B
$$\overline {bd} + \overline {bc}$$
C
$$\overline {bd} + a\overline {bc} d$$
D
$$\overline {bd} + \overline {bc} + \overline {cd}$$
4
GATE CSE 2004
MCQ (Single Correct Answer)
+2
-0.6
Consider a multiplexer with $$X$$ and $$Y$$ as data inputs and $$Z$$ as control input. If $$z=0$$ select input $$x,$$ and $$z=1$$ selects input $$Y$$. what are the connections required to realize the $$2-$$variable Boolean function $$f=T+R$$ without using any additional Hardware?
A
$$R$$ to $$X,$$ $$1$$ to $$Y,$$ $$T$$ to $$Z$$
B
$$T$$ to $$X,$$ $$R$$ to $$Y,$$ $$T$$ to $$Z$$
C
$$T$$ to $$X,$$ $$R$$ to $$X,$$ $$O$$ to $$Z$$
D
$$R$$ to $$X,$$ $$O$$ to $$Y,$$ $$T$$ to $$Z$$
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