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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the function of the Data Bus Buffer in the 8255?
💡 Hint: Think about how data is transferred.
Question 2
Easy
How many ports does the 8255 PPI have?
💡 Hint: Count the different interfaces mentioned.
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 does the Data Bus Buffer do in the 8255?
- A. It handles power supply
- B. It facilitates data flow
- C. It controls the CPU
💡 Hint: Think about how information is communicated.
Question 2
True or False: The 8255 PPI can only operate in one mode at a time for all its ports.
- True
- False
💡 Hint: Consider how flexible the configuration can be.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
If the control word to configure Port A as input, Port B as output, and the upper part of Port C as input is 9AH, what would the respective binary representation look like?
💡 Hint: Translate each setting into binary as per the control word structure.
Question 2
Why do configurations in the 8255 change when the system is reset? Discuss the underlying principle.
💡 Hint: Consider why initial conditions are necessary for stable operation.
Challenge and get performance evaluation