Practice - Parallel Input/Output (PIO): Programmable Peripheral Interface (e.g., 8255), Modes of Operation, and Port Addressing
Practice Questions
Test your understanding with targeted questions
What is the function of the 8255 Programmable Peripheral Interface?
💡 Hint: Think about its main purpose.
Name the three ports of the 8255.
💡 Hint: They all start with the letter 'P'.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the main purpose of the 8255 PPI?
💡 Hint: Focus on its role in data communication.
True or False: The 8255 PPI can operate in three modes.
💡 Hint: Think about how many different ways it can communicate.
1 more question available
Challenge Problems
Push your limits with advanced challenges
Consider an application where the 8255 is configured to interface with an external keypad. Describe how you would set up the control word for this configuration using modes of operation.
💡 Hint: Think about the functionality needed for the keypad application.
You need to read data from Port B and write to Port A of the 8255 simultaneously. Explain how you could achieve this in your program.
💡 Hint: Remember the differences between modes and how to control reading and writing.
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Reference links
Supplementary resources to enhance your learning experience.