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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. What do the contents of instruction register specify?

    2. A.
    Operand for the instruction being executed
    B.
    Op code for the instruction being executed
    C.
    Op code for the instruction to be executed next
    D.
    Operand for the instruction to be executed next

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  2. In the decimal number 27, the digital 2 represents

    3. A.
    2
    B.
    20
    C.
    0.2
    D.
    200

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  3. Which of the following is true?

    4. A.
    SOP is a two level logic
    B.
    POS is a two level logic
    C.
    Both SOP and POS are two level logic
    D.
    Hybrid function is two level logic

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  4. E7F616 = __________ .

    5. A.
    60000010
    B.
    5938210
    C.
    938210
    D.
    38210

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  5. What is the normal range of analog input voltage?

    6. A.
    0 to 1 V
    B.
    0 to 5 V
    C.
    5 to 15 V
    D.
    15V to 30V

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  6. Assertion (A): The propagation delay in ECL is minimum

    Reason (R): Transistors used in ECL switch between active and cutoff regions.

    7. 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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  7. For the design of a sequential circuit having 9 states, minimum number of memory elements required is

    8. A.
    3
    B.
    4
    C.
    5
    D.
    9

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  8. ICs are

    9. A.
    analog
    B.
    digital
    C.
    both analog and digital
    D.
    mostly analog

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  9. In a 5 x 7 dot matrix, format, to store 64 alphanumeric characters we require

    10. A.
    1120 bits
    B.
    2240 bits
    C.
    33 bits
    D.
    64 bits

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  10. A digital system is required to amplify a binary encoded audio signal. The user should be able to control the gain of the amplifier from a minimum to a maximum in 100 increments. The minimum number of bits required to encode, in straight binary is,

    11. A.
    8
    B.
    6
    C.
    5
    D.
    7

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