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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. A multilevel decoder is more costly as compared to single level decoder.

    2. A.
    True
    B.
    False

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  2. EPROM can be

    3. A.
    UVPROM
    B.
    EEPROM
    C.
    both UVPROM and EEPROM
    D.
    none of the above

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  3. A full subtractor has a total of

    4. A.
    2 inputs
    B.
    3 inputs
    C.
    4 inputs
    D.
    5 inputs

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  4. The function of interface circuit is

    5. A.
    to match output conditions of driver with input conditions of load device
    B.
    to match output conditions of load device with input conditions of driver
    C.
    both (a) and (b)
    D.
    neither (a) nor (b)

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  5. 127416 - 3A716 = __________ .

    6. A.
    ACA16
    B.
    ACB16
    C.
    ECD16
    D.
    AAA16

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  6. With four Boolean variables, how many Boolean expressions can be performed?

    7. A.
    16
    B.
    256
    C.
    1024 (1 K)
    D.
    64K (64 x 1024)

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  7. A + (B . C) =

    8. A.
    A . B + C
    B.
    A . B + A . C
    C.
    A
    D.
    (A + B) . (A + C)

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  8. To count 1000 bottles in a milk plant, the minimum number of flip flops requires is

    9. A.
    12
    B.
    10
    C.
    8
    D.
    6

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  9. Decimal 8 in excess-3 code =

    10. A.
    1000
    B.
    1001
    C.
    1011
    D.
    1111

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  10. The inputs to a 3 bit binary adder are 1112 and 1102. The output will be

    11. A.
    101
    B.
    1101
    C.
    1111
    D.
    1110

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