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Peripheral Interface MCQs

  • 1. The ______ is a general purpose programmable I/O device designed to transfer the data from I/O to interrupt I/O.
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    Answer is : C
  • 2. How many ports 8255A has?
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    Answer is : B
  • 3.  Which port can be split into two parts?
  • filter_dramaExplanation
    Answer is : C
  • 4. Which of the following are Features of 8255A?
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    Answer is : D
  • 5. Which of the following is responsible for controlling the internal/external transfer of data/control/status word?
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    Answer is : B
  • 6. Which of the following uses N-MOS technology?
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    Answer is : A
  • 7. It is a tri-state, bi-directional, 8-bit buffer, which is used to interface the 8253/54 to the system data bus.
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    Answer is : B
  • 8.  8253/54 can be operated in _________ Modes?
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    Answer is : D
  • 9. Which mode can be used as a mono stable multi-vibrator?
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    Answer is : B
  • 10. Which mode generates a strobe in response to an externally generated signal?
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    Answer is : C
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