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Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
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Knowledge
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the function of the Control Word Register in the 8255?
💡 Hint: Think about initialization.
Question 2
Easy
What mode allows individual bits of a port to be changed without affecting others?
💡 Hint: Relates to individual pin adjustments.
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?
- To communicate with serial devices
- To provide parallel I/O ports
- To act as a memory unit
💡 Hint: Identify the role of the PPI.
Question 2
True or False: The D7 bit in the control word is used for selecting BSR mode.
- True
- False
💡 Hint: Recall what BSR mode signifies.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
How would you create a program that interfaces with multiple LEDs and switches, allowing the user to turn LEDs on based on switch positions?
💡 Hint: Think about the control logic between inputs and outputs.
Question 2
Design a basic control sequence for controlling two devices via the 8255 simultaneously while maintaining switch input states.
💡 Hint: Consider simultaneous I/O operations and ensuring the correct data flow.
Challenge and get performance evaluation