Embedded Systems
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Questions and Answers

Which type of instructions can support I/O in embedded systems?

  • No instructions can support I/O in embedded systems
  • Memory-mapped load/store instructions
  • Special-purpose I/O instructions
  • Both special-purpose and memory-mapped instructions (correct)

    • What is the purpose of status registers in an I/O device?

  • To define the location for the device
  • To hold data to be read or written by a disk
  • To provide information about the device's state (correct)
  • To read and write data from the CPU

    • Which type of interface is typically used between the CPU and an I/O device?

  • Analog interface
  • Digital interface (correct)
  • Serial interface
  • Parallel interface

    • What is the function of I/O primitives in programming?

    <p>To read and write data from the CPU (B)</p> Signup and view all the answers

    Which CPU instruction is commonly used for I/O in Intel x86 architecture?

    <p>out (D)</p> Signup and view all the answers

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