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CSE :: Digital Computer Electronics

  1. How many inputs signals can a gate have?

  2. A.
    one
    B.
    more than one
    C.
    two only
    D.
    both (a) and (b)
    E.
    None of the above

  3. A combinational logic circuit which is used when it is desired to send data from two or more source through a single transmission line is known as

  4. A.
    encoder
    B.
    decoder
    C.
    multiplexer
    D.
    demultiplexer
    E.
    None of the above

  5. Conversion of binary number 10010012 to hexadecimal is

  6. A.
    4016
    B.
    3916
    C.
    4916
    D.
    4216
    E.
    None of the above

  7. Which logic family dissipates the minimum power?

  8. A.
    DTL
    B.
    TTL
    C.
    ECL
    D.
    CMOS
    E.
    None of the above

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

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

  11. A bus is a group of _____ carrying digital signals.

  12. A.
    wires
    B.
    gates
    C.
    transistors
    D.
    registers
    E.
    None of the above

  13. The simplified form of the Boolean expression (X + Y + XY)(X + Z) is

  14. A.
    X + Y + Z
    B.
    XY + YZ
    C.
    X + YZ
    D.
    XZ + Y
    E.
    None of the above

  15. De Morgan's first theorem says that a NOR gate is equivalent to a bubbled _____ gate.

  16. A.
    AND
    B.
    XAND
    C.
    XOR
    D.
    NOR
    E.
    None of the above

  17. Addition of 102 and 112 is

  18. A.
    1002
    B.
    1012
    C.
    1112
    D.
    1102
    E.
    None of the above

  19. How many bits are required to encode all twenty six letters ten symbols, and ten numerals?

  20. A.
    5
    B.
    6
    C.
    2
    D.
    3
    E.
    None of the above