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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. Octal number 12 is equal to decimal number

    2. A.
    8
    B.
    9
    C.
    10
    D.
    11

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  2. Hexadecimal number E is equal to binary number

    3. A.
    1110
    B.
    1101
    C.
    1001
    D.
    1111

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  3. Decimal number 46 in excess 3 code =

    4. A.
    1000 1001
    B.
    0111 1001
    C.
    0111 1111
    D.
    1000 1111

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  4. Logic hardware is available only in NAND and NOR.

    5. A.
    True
    B.
    False

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  5. A 4 input AND gate is equivalent to

    6. A.
    4 switches in parallel
    B.
    2 switches in series and 2 in parallel
    C.
    three switches in parallel and one in series
    D.
    4 switches in series

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  6. The circuit of the given figure is

    7. A.
    full adder
    B.
    full subtractor
    C.
    shift register
    D.
    decade counter

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  7. A half adder adds

    8. A.
    2 bits
    B.
    3 bits
    C.
    4 bits
    D.
    2 or 3 bits

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  8. The no. of comparators required in a 3 bit comparator type ADC is

    9. A.
    2
    B.
    3
    C.
    7
    D.
    8

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  9. A 4 bit down counter starts counting from 1111 irrespective of modulus.

    10. A.
    True
    B.
    False

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  10. The number of counter states which an 8 bit stair step A/D converter has to pass through before conversion takes place is equal to

    11. A.
    1
    B.
    8
    C.
    255
    D.
    256

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