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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

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  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

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  5. Conversion of binary number 10010012 to hexadecimal is

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

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  7. Which logic family dissipates the minimum power?

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

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  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

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

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

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  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

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  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

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  17. Addition of 102 and 112 is

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

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  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

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