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  • Question
  • Which bus is a bidirectional bus?


  • Options
  • A. address bus
  • B. data bus
  • C. address bus and data bus
  • D. none of the above

  • Correct Answer
  • data bus 


  • Microprocessor Fundamentals problems


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    • 1. The devices that provide the means for a computer to communicate with the user or other computers are referred to as:

    • Options
    • A. CPU
    • B. ALU
    • C. I/O
    • D. none of the above
    • Discuss
    • 2. The items that you can physically touch in a computer system are called:

    • Options
    • A. software
    • B. firmware
    • C. hardware
    • D. none of the above
    • Discuss
    • 3. What type of circuit is used at the interface point of an output port?

    • Options
    • A. decoder
    • B. latch
    • C. tristate buffer
    • D. none of the above
    • Discuss
    • 4. I/O mapped systems identify their input/output devices by giving them a(n) ________.

    • Options
    • A. 8-bit port number
    • B. 16-bit port number
    • C. 8-bit buffer number
    • D. 8-bit instruction
    • Discuss
    • 5. The ________ ensures that only one IC is active at a time to avoid a bus conflict caused by two ICs writing different data to the same bus.

    • Options
    • A. control bus
    • B. control instructions
    • C. address decoder
    • D. CPU
    • Discuss
    • 6. A register in the microprocessor that keeps track of the answer or results of any arithmetic or logic operation is the:

    • Options
    • A. stack pointer
    • B. program counter
    • C. instruction pointer
    • D. accumulator
    • Discuss
    • 7. When was the first 8-bit microprocessor introduced?

    • Options
    • A. 1969
    • B. 1974
    • C. 1979
    • D. 1985
    • Discuss
    • 8. The technique of assigning a memory address to each I/O device in the computer system is called:

    • Options
    • A. memory-mapped I/O
    • B. ported I/O
    • C. dedicated I/O
    • D. wired I/O
    • Discuss
    • 9. All computer programs for a machine are called:

    • Options
    • A. software
    • B. firmware
    • C. hardware
    • D. none of the above
    • Discuss
    • 10. What type of circuit is used at the interface point of an input port?

    • Options
    • A. decoder
    • B. latch
    • C. tristate buffer
    • D. none of the above
    • Discuss


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