Monday, 19 August 2019

Digital Circuits: Assignment 4

           ,      1 comment   

Ans:a
1 point
2.
 Ans: d
1 point
3.
Ans:c
4.
1 point
Ans: b
5.
1 point
Ans: b
6.
Ans: c
7.
1 point
Ans: c
8.
1 point
Ans: c
9.
Ans: b
10.
1 point
Ans: b
11.
1 point
Ans: d
12.
1 point
Ans: c
13.
1 point
Ans: b
14.
1 point
Ans: a
15.
1 point
Ans: a

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1 comment:

  1. Unknown3 September 2019 at 06:45

    Some answers are incorrect.
    and these are the correct answers for that,

    QUESTION 1:
    Consider a 4-bit adder with inputs A = {A3A2A1A0} and B = { B 3 B 2 B 1 B 0}. For which of the following
    input condition no carry-out would be generated. (Assume there is no carry input)
    a. A = {1011}, B = {0101}
    b. A = {1011}, B = {0001}
    c. A = {1011}, B = {0100}
    d. A = {1001}, B = {0101}
    Correct Answer: a
    Detailed Solution:
    Carry out would be generated only for first option. Sum = 10000

    QUESTION 8:
    In a half-subtractor circuit with X and Y as inputs, the Borrow (M) and Difference (N = X - Y) are given by
    a) M = XY, N = X xor Y
    b) M = X’Y, N = X’ xor Y
    c) M = X’Y, N = X xor Y
    d) M = X’Y, N = (X xor Y)’
    Correct Answer: c
    Detailed Solution:
    M = X’Y, N = X xor Y

    QUESTION 9:
    If the output of a digital circuit makes a momentary transition to logic 1, while otherwise the output is
    logic 0, it is called a
    a) Static-1 Hazard
    b) Static-0 Hazard
    c) Dynamic Hazard
    d) No Hazard
    Correct Answer: b

    QUESTION 10:
    A full adder can be realized using
    a) one half adder, two AND gates
    b) two half adders, one OR gate
    c) two half adders, one AND gate
    d) two half adders, two AND gates
    Correct Answer: b

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