Practice - 8255 Internal Addressing and Control Word Register
Practice Questions
Test your understanding with targeted questions
What is the control word format for configuring Port A as output?
💡 Hint: Focus on the direction setting of Port A in the control word.
What is the I/O address of Port B when the base address is 80H?
💡 Hint: Add 1 to the base address for Port B.
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Interactive Quizzes
Quick quizzes to reinforce your learning
In which mode can the 8255 Port A be used for Bidirectional I/O?
💡 Hint: Recall the mode definitions for Port A.
True or False: The CS pin needs to be high for the 8255 to communicate.
💡 Hint: Consider the Chip Select signal functionality.
1 more question available
Challenge Problems
Push your limits with advanced challenges
You need to read data from switches, process it, and display it on LEDs. Describe how you would set up the 8255 and write the control word.
💡 Hint: Think about the configuration of input vs output and write the control word.
Explain a scenario where improperly configured control words could lead to system failure.
💡 Hint: Consider functional applications and necessary configurations for proper operation.
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Reference links
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