Practice Special I/O Commands - 25.4.3 | 25. Programmed I/O Overview | Computer Organisation and Architecture - Vol 3
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Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What does polling refer to in I/O operations?

💡 Hint: Think about how you wait for a device to be ready.

Question 2

Easy

Define memory-mapped I/O.

💡 Hint: What happens to addresses in this situation?

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is the primary problem with polling in I/O operations?

  • Wastes CPU time
  • Increases data transfer speed
  • Simplifies programming

💡 Hint: Think about the efficiency of waiting.

Question 2

True or False: Control commands are only used in isolated I/O.

  • True
  • False

💡 Hint: Recall the function of control commands in general.

Solve 2 more questions and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Design a simple flowchart that illustrates the steps taken by a CPU to perform an I/O operation using programmed I/O.

💡 Hint: Think about the logical sequence of events for an I/O operation.

Question 2

Discuss potential improvements that could be made to programmed I/O to enhance efficiency and specify how you might implement them.

💡 Hint: Consider the trade-offs between waiting and immediate notification.

Challenge and get performance evaluation