Practice - Program 3: Read Switch Inputs from Port B and Display on Port C Lower
Practice Questions
Test your understanding with targeted questions
What is the purpose of the control word in configuring the 8255?
💡 Hint: Think about what control words do.
How many switches can be read from Port B if configured correctly?
💡 Hint: Consider the number of bits available on Port B.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What is the control word to configure Port B as input and Port C Lower as output?
💡 Hint: Recall the configuration bits.
True or False: The accumulator is not used in reading data from the ports.
💡 Hint: Consider what the accumulator does in the context of input operations.
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Challenge Problems
Push your limits with advanced challenges
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.
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.
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Reference links
Supplementary resources to enhance your learning experience.