Basic Of Digital Electronic

9 Questions | Total Attempts: 61

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Electronics Quizzes & Trivia

Basic concept of DE


Questions and Answers
  • 1. 
    ............ are Universal gates.
    • A. 

      NAND & NOR

    • B. 

      EX-OR

    • C. 

      NOT gate

    • D. 

      None of above

  • 2. 
    When the output of NAND gate is LOW
    • A. 

      When both input are same

    • B. 

      When one is high and other is low

    • C. 

      When both input are 1

    • D. 

      When both input are 0

  • 3. 
    What will the next number of this series, when the base is octal 656, 657, .....
    • A. 

      658

    • B. 

      670

    • C. 

      660

    • D. 

      700

  • 4. 
    Which Universal gate is sufficient to implement, when function is in POS form
    • A. 

      OR gate

    • B. 

      NAND gate

    • C. 

      EX-NOR gate

    • D. 

      NOR gate

  • 5. 
    A parity bit is an extra bit that is attached with a message to make total number of......... either even or odd. 
    • A. 

      0

    • B. 

      1

    • C. 

      Both 0 & 1

    • D. 

      None of above

  • 6. 
    Which one is non-weighted code
    • A. 

      84-2-1

    • B. 

      BCD

    • C. 

      Excess-3

    • D. 

      2421

  • 7. 
    To design a BCD adder which number would you add if the sum is incorrect
    • A. 

      0110(6)

    • B. 

      0101(5)

    • C. 

      1000(8)

    • D. 

      1001(9)

  • 8. 
    This device always gives single output.
    • A. 

      Encoder

    • B. 

      Multiplexer

    • C. 

      De-Multiplexer

    • D. 

      Code converter

  • 9. 
    A 1024x6 ROM has....... input
    • A. 

      6

    • B. 

      1024

    • C. 

      5

    • D. 

      10