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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. How many interrupts are there in 8085 microprocessor?

    2. A.
    4
    B.
    5
    C.
    6
    D.
    8

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  2. 1111 + 11111 =

    3. A.
    101111
    B.
    101110
    C.
    111111
    D.
    011111

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  3. Given figure is the voltage transfer characteristic of

    4. A.
    an N MOS inverter with enhanced mode transistor as load
    B.
    an N MOS inverter with depletion mode transistor as load
    C.
    a CMOS inverter
    D.
    BJT inverter

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  4. If one wants to design a binary counter, preferred type of flip-flop is

    5. A.
    D-type
    B.
    SR type
    C.
    Latch
    D.
    JK type

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  5. (100101)2 is

    6. A.
    (37)10
    B.
    (69)10
    C.
    (41)10
    D.
    (5)10

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  6. In which function is each term known as maxterm?

    7. A.
    SOP
    B.
    POS
    C.
    Hybrid
    D.
    SOP and Hybrid

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  7. For a NOR SR latch the normal resting state of inputs is

    8. A.
    S = R = 1
    B.
    S = 0, R = 1
    C.
    S = 0, R = 0
    D.
    S = 1, R = 0

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  8. Decimal 18.29 when converted int 10's complement will become

    9. A.
    81.7707
    B.
    81.700
    C.
    81.777
    D.
    81.077

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  9. An 8-bit microprocessor has 16 bit address bus A0 - A15. The processor addresses a 1-K byte memory chip as shown. The address range for the chip is

    10. A.
    (F00F)H TO (F40E)H
    B.
    (F000)H TO (F3FF)H
    C.
    (F100)H TO (F4FF)H
    D.
    (F700)H TO (FAFF)H

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  10. The complement of Boolean expression AB (B C + AC) is

    11. A.
    (A + B) + (B + C) + (A + C)
    B.
    A B + (B + C)(A + C)
    C.
    (A + B) + (B + C) (A + C)
    D.
    none of the above

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