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ECE :: Digital Electronics

Digital Electronics - Section 1
Digital Electronics - Section 2
Digital Electronics - Section 3
Digital Electronics - Section 4
Digital Electronics - Section 5
Digital Electronics - Section 6
Digital Electronics - Section 7
Digital Electronics - Section 8
Digital Electronics - Section 9
Digital Electronics - Section 10
Digital Electronics - Section 11
Digital Electronics - Section 12
Digital Electronics - Section 13
Digital Electronics - Section 14
Digital Electronics - Section 15
Digital Electronics - Section 16
Digital Electronics - Section 17
Digital Electronics - Section 18
Digital Electronics - Section 19
Digital Electronics - Section 20
Digital Electronics - Section 21
Digital Electronics - Section 22
Digital Electronics - Section 23
Digital Electronics - Section 24
Digital Electronics - section-25
Digital Electronics - Section-26

  1. Assertion (A): Master slave JK flip flop is commonly used in high speed synchronous circuitry

    Reason (R): Master slave JK flip flop uses two JK flip flops in cascade.

    2. A.
    Both A and R are correct and R is correct explanation of A
    B.
    Both A and R are correct but R is not correct explanation of A
    C.
    A is true, R is false
    D.
    A is false, R is true

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  2. Inputs A and B of the given figure are applied to a NAND gate. The output is LOW

    3. A.
    from 0 to 6
    B.
    from 0 to 2
    C.
    from 0 to 1 and 2 to 3
    D.
    from 1 to 2 and 3 to 4

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  3. ECL is a saturating logic.

    4. A.
    True
    B.
    False

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  4. For the NMOS gate in the given figure, F =

    5. A.
    ABCDE
    B.
    (AB + C) (D + E)
    C.
    A(B + C) + DE
    D.
    A + B C + DE

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  5. The resolution of 4 bit counting ADC is 0.5 volt, for an Analog input of 6.6 volts. The digital output of ADC will be

    6. A.
    1011
    B.
    1101
    C.
    1100
    D.
    1110

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  6. 9's complement of 1210 is

    7. A.
    2110
    B.
    8710
    C.
    7810
    D.
    7610

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  7. The minterm designation for ABCD is

    8. A.
    m8
    B.
    m10
    C.
    m14
    D.
    m15

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  8. Read the following statements

    1. The circuitry of ripple counter is more complex than that of synchronous counter.
    2. The maximum frequency of operation of ripple counter depends on the modulus of the counter.
    3. The maximum frequency of operation of synchronous counter does not depend on the modulus of the counter.
    Which of the above statements are correct?

    9. A.
    1 only
    B.
    1, 2
    C.
    1, 2, 3
    D.
    2, 3

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  9. The minterm designation for ABCD is

    10. A.
    m11
    B.
    m13
    C.
    m15
    D.
    m16

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  10. The logic circuit of the given figure is equivalent to

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