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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. For the gate in the given figure the output will be

    2. A.
    0 
    B.
    1
    C.
    A
    D.
    A

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  2. In the expression A + BC, the total number of minterms will be

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

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  3. The circuit in the given figure is

    4. A.
    positive logic XOR gate
    B.
    negative logic OR gate
    C.
    negative logic AND gate
    D.
    positive logic AND gate

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  4. Which of the following is non-saturating?

    5. A.
    TTL
    B.
    CMOS
    C.
    ECL
    D.
    Both (a) and (b)

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  5. The number of digits in octal system is

    6. A.
    8
    B.
    7
    C.
    9
    D.
    10

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  6. The access time of a word in 4 MB main memory is 100 ms. The access time of a word in a 32 kb data cache memory is 10 ns. The average data cache bit ratio is 0.95. The efficiency of memory access time is

    7. A.
    9.5 ns
    B.
    14.5 ns
    C.
    20 ns
    D.
    95 ns

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  7. The expression Y = pM (0, 1, 3, 4) is

    8. A.
    POS
    B.
    SOP
    C.
    Hybrid
    D.
    none of the above

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  8. An 8 bit DAC has a full scale output of 2 mA and full scale error of ± 0.5%. If input is 10000000 the range of outputs is

    9. A.
    994 to 1014 μA
    B.
    990 to 1020 μA
    C.
    800 to 1200 μA
    D.
    none of the above

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  9. Decimal 43 in hexadecimal and BCD number system is respectively.

    10. A.
    B2, 01000011
    B.
    2B, 01000011
    C.
    2B, 00110100
    D.
    B2, 01000100

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  10. The circuit of the given figure realizes the function

    11. A.
    Y = (A + B) C + DE
    B.
    Y = A + B + C + D + E
    C.
    AB + C +DE
    D.
    AB + C(D + E)

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