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Knowledge
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What are the three ports available in the 8255 PPI?
💡 Hint: Think about the letters in the name.
Question 2
Easy
What does the Control Word Register configure?
💡 Hint: Consider what needs setup before using the ports.
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 function of the 8255 PPI?
- Data processing
- Peripheral interfacing
- Signal amplification
💡 Hint: Think about what connects various devices to the CPU.
Question 2
Mode 2 in the 8255 allows for which operation?
- True
- False
💡 Hint: Consider whether two-way communication might be feasible.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Using the 8255 PPI, design a circuit that connects a keyboard and an LED display. How would you configure the ports?
💡 Hint: Think about which ports are best suited for input vs output.
Question 2
Write assembly code to toggle Port C's lower nibble every second. How might you use the 8255 PPI in this setup?
💡 Hint: Consider what instructions will help manage timing for toggling.
Challenge and get performance evaluation