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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the purpose of the control word in configuring the 8255?
💡 Hint: Think about what control words do.
Question 2
Easy
How many switches can be read from Port B if configured correctly?
💡 Hint: Consider the number of bits available on Port B.
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 control word to configure Port B as input and Port C Lower as output?
- 8AH
- 9AH
- A1H
💡 Hint: Recall the configuration bits.
Question 2
True or False: The accumulator is not used in reading data from the ports.
- True
- False
💡 Hint: Consider what the accumulator does in the context of input operations.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
How would you modify the assembly code to also send the state of Port A to another output port (let's say Port D) without changing other configurations?
💡 Hint: Think about how to seamlessly add instructions while maintaining the existing flow.
Question 2
Design a functionality where the LED on Port C should blink whenever a switch is toggled on Port B. How would that change your implementation?
💡 Hint: Consider using loops and condition checks for this scenario.
Challenge and get performance evaluation