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ECE :: Digital Electronics

  1. An 8 bit data is to be entered into a parallel in register. The number of clock pulses required is

  2. A.
    8
    B.
    4
    C.
    2
    D.
    1

  3. Which of the following is error correcting code?

  4. A.
    EBCDIC
    B.
    Gray
    C.
    Hamming
    D.
    ASCII

  5. A universal shift register can shift

  6. A.
    from left to right
    B.
    from right to left
    C.
    both from left to right and right to left
    D.
    none of the above

  7. Available multiplexer IC package can have a maximum of 8 inputs.

  8. A.
    True
    B.
    False

  9. A16 X 216 __________ .

  10. A.
    1616
    B.
    1516
    C.
    1416
    D.
    1316

  11. For the binary number 11101000, the equivalent hexadecimal number is

  12. A.
    F 9
    B.
    F 8
    C.
    E 9
    D.
    E 8

  13. AECF116 + 15ACD16 = __________ .

  14. A.
    C47BB16
    B.
    C47BE16
    C.
    A234F16
    D.
    A111116

  15. A XOR gate has inputs A and B and output Y. Then the output equation is

  16. A.
    Y = AB
    B.
    Y = AB + A B
    C.
    Y = A B + A B
    D.
    Y = A B + A B

  17. Wired AND connection can be used in TTL with totem pole output.

  18. A.
    True
    B.
    False

  19. The Boolean expression for the circuit of the given figure

  20. A.
    A {F + (B + C) (D + E)}
    B.
    A [F + (B + C) (DE)]
    C.
    A + F + (B + C) (D + E)]
    D.
    A [F + (BC) (DE)]