1
GATE ECE 2014 Set 4
Numerical
+2
-0
A 16-bit ripple carry adder is realized using 16 identical full adders (FA) as shown in the figure. The carry-propagation delay of each FA is 12 ns and the sum-propagation delay of each FA is 15 ns. The worst case delay (in ns) of this 16-bit adder will be_______________. GATE ECE 2014 Set 4 Digital Circuits - Combinational Circuits Question 28 English
Your input ____
2
GATE ECE 2014 Set 4
MCQ (Single Correct Answer)
+2
-0.6
An 8-to-1 multiplexer is used to implement a logical function Y as shown in the figure. The output Y is given by GATE ECE 2014 Set 4 Digital Circuits - Combinational Circuits Question 29 English
A
Y= A$$\overline B \,C + A\overline C D$$
B
$$Y = \overline A BC + A\overline B D$$
C
$$Y = AB\overline C + \overline A CD$$
D
$$Y = \overline A \,\overline B D + A\overline B C$$
3
GATE ECE 2010
MCQ (Single Correct Answer)
+2
-0.6
The Boolean function realized by the logic circuit shown is GATE ECE 2010 Digital Circuits - Combinational Circuits Question 32 English
A
F=∑m(0,1,3,5,9,10,14)
B
F=∑m(2,3,5,7,8,12,13)
C
F=∑m(1,2,4,5,11,14,15)
D
F=∑m(2,3,5,7,8,9,12)
4
GATE ECE 2009
MCQ (Single Correct Answer)
+2
-0.6
What are the minimum number of 2-to 1 multiplexers required to generate a 2-input AND gate and a 2-input EX-OR gate?
A
1 and 2
B
1 and 3
C
1 and 1
D
2 and 2

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