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CSE :: Digital Computer Electronics

  1. In boolean algebra, the times sign stands for the _____ operation

  2. A.
    AND
    B.
    OR
    C.
    NAND
    D.
    NOR
    E.
    None of the above

  3. What logic function is obtained by adding an inverter to the output of an AND gate?

  4. A.
    OR
    B.
    NAND
    C.
    XOR
    D.
    NOR
    E.
    None of the above

  5. Conversion of an octal number 74328 to a binary number is

  6. A.
    11110001101112
    B.
    1111000110102
    C.
    1100110101112
    D.
    1111111110002
    E.
    None of the above

  7. Conversion of an octal number 1438 to hexadecimal number is

  8. A.
    6316
    B.
    6016
    C.
    5016
    D.
    5716
    E.
    None of the above

  9. The memory cell of a dynamic RAM is simpler and smaller than the memory cell of a _____ RAM.

  10. A.
    volatile
    B.
    static
    C.
    semiconductor
    D.
    bipolar
    E.
    None of the above

  11. A byte is consist of _____ bits

  12. A.
    two
    B.
    four
    C.
    eight
    D.
    ten
    E.
    None of the above

  13. What is the 1's complement of 0000 1111 0010 1101 number?

  14. A.
    1111 0000 0010 1101
    B.
    1111 0000 1101 0010
    C.
    1111 1100 1010 1100
    D.
    1001 0010 1010 1100
    E.
    None of the above

  15. Addition of 11012 and 10102 is

  16. A.
    101012
    B.
    110002
    C.
    110112
    D.
    101112
    E.
    None of the above

  17. A NAND gate is equivalent to an AND gate followed by an inverter. All inputs must be _____ to get a low output

  18. A.
    low
    B.
    high
    C.
    some low and some high
    D.
    0's
    E.
    None of the above

  19. What logic function is produced by adding an inverter to the output of an AND gate?

  20. A.
    NAND
    B.
    NOR
    C.
    XOR
    D.
    OR
    E.
    None of the above