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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. Full adder circuit can be implemented by

    2. A.
    Multiplexers
    B.
    Half adders
    C.
    AND or OR gates
    D.
    Decoders

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  2. (FE35)16 XOR (CB15)16 is equal to

    3. A.
    (3320)16
    B.
    (FE35)16
    C.
    (FF50)16
    D.
    (3520)16

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  3. If 4 in binary system is 100 then 8 will be

    4. A.
    10
    B.
    100
    C.
    111
    D.
    1000

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  4. In the given figure A = 1, B = 1. B is now changed to a sequence 101010................The outputs X and Y will be

    5. A.
    fixed at 0 and 1 respectively
    B.
    X = 1010.......and Y = 0101........
    C.
    X = 1010..........and Y = 1010
    D.
    fixed at 1 and 0 respectively.

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  5. The ALU carrier out arithmetic and logic operations (OR AND, NOT, etc.) it processes

    6. A.
    decimal numbers
    B.
    binary numbers
    C.
    hexadecimal numbers
    D.
    octal numbers

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  6. The total number of fundamental products of three variables is

    7. A.
    3
    B.
    5
    C.
    8
    D.
    16

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  7. As per Boolean algebra, inputs can be interchanged in

    8. A.
    OR gates
    B.
    AND gates
    C.
    both OR and AND gates
    D.
    none of the above

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  8. Medium scale integration refers to ICs with

    9. A.
    more than 12 but less than 30 gates on the same chip
    B.
    more than 50 gates on the same chip
    C.
    more than 20 but less than 100 gates on the same chip
    D.
    more than 12 but less than 100 gates on the same chip

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  9. The decimal equivalent of the hexadecimal number (3 E 8)16 is

    10. A.
    1000
    B.
    982
    C.
    768
    D.
    323

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  10. Four memory chips of 16 x 4 size have their address buses connected together. This system will be of size

    11. A.
    64 x 4
    B.
    16 x 16
    C.
    32 x 8
    D.
    256 x 1

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