Practice - 8255 Block Diagram and Features
Practice Questions
Test your understanding with targeted questions
What is the function of the Data Bus Buffer in the 8255?
💡 Hint: Think about how data is transferred.
How many ports does the 8255 PPI have?
💡 Hint: Count the different interfaces mentioned.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does the Data Bus Buffer do in the 8255?
💡 Hint: Think about how information is communicated.
True or False: The 8255 PPI can only operate in one mode at a time for all its ports.
💡 Hint: Consider how flexible the configuration can be.
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Challenge Problems
Push your limits with advanced challenges
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.
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.
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Reference links
Supplementary resources to enhance your learning experience.