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CSE :: Digital Computer Electronics

Digital Computer Electronics - Section 1
Digital Computer Electronics - Section 2
Digital Computer Electronics - Section 3
Digital Computer Electronics - Section 4
Digital Computer Electronics - Section 5

  1. If a microcomputer has a 64K memory, what are the hexadecimal notations for the first and last memory location?

    2. A.
    0000, EEEE
    B.
    0, 64
    C.
    0000, FFFF
    D.
    0000, 9999
    E.
    None of the above

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  2. A microprocessor has memory locations from 0000 to 3FFF. Each memory location stores 1 byte. How bytes can the memory store? Express this in kilobytes?

    3. A.
    4,095, 4K
    B.
    16,384, 16K
    C.
    32,740, 32K
    D.
    46,040, 46K
    E.
    None of the above

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  3. The m-bit parallel adder consists of:

    4. A.
    (m+1) full adders
    B.
    m/2 full adders
    C.
    m-1 full adders
    D.
    m full adders
    E.
    None of the above

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  4. An OR gate has 6 inputs. How many input words are in its truth table?

    5. A.
    64
    B.
    32
    C.
    16
    D.
    128
    E.
    None of the above

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  5. Which TTL sub-family has maximum speed?

    6. A.
    standard TTL
    B.
    schottky-clamped TTL
    C.
    high speed TTL
    D.
    low power TTL
    E.
    None of the above

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  6. Conversion of binary number 1100012 to its decimal number is

    7. A.
    2710
    B.
    4910
    C.
    3910
    D.
    5010
    E.
    None of the above

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  7. How many memory locations can 14 address bits access?

    8. A.
    16,384
    B.
    8,192
    C.
    4096
    D.
    14
    E.
    None of the above

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  8. The ASCII code is a 7-bit code for

    9. A.
    letters
    B.
    numbers
    C.
    other symbols
    D.
    All of the above
    E.
    None of the above

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  9. The EXCLUSIVE - NOR gate is equivalent to an _____ gate followed by an invertor.

    10. A.
    OR
    B.
    AND
    C.
    NAND
    D.
    XOR
    E.
    None of the above

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  10. The 2's compliment of binary number 010111.1100 is

    11. A.
    101001.1100
    B.
    101000.0100
    C.
    010111.0011
    D.
    101000.0011
    E.
    None of the above

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