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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the function of the Control Word in the 8255?
💡 Hint: Think about how you would set up ports for your experiment.
Question 2
Easy
What is the value of D7 in I/O Mode Set Control Words?
💡 Hint: This bit tells the device what type of control word it is.
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 does bit D7 represent in the Control Word?
- Always 1 for I/O Mode
- Always 0 for BSR
- Control unused modes
💡 Hint: Think of what type of control you are setting.
Question 2
True or False: D5 and D6 are responsible for setting both the mode of Port A.
- True
- False
💡 Hint: Remember how many modes are there.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Consider a scenario where you find that all LEDs connected to Port A do not light up despite sending a control word. Discuss possible reasons and solutions.
💡 Hint: Start by verifying the control word configurations and move step by step.
Question 2
Create a comprehensive control word to set Port A as input, Port B as output, and Port C Upper as input while specifying the correct bits including the modes.
💡 Hint: Remember to analyze and sum up how setting each direction signifies what you intend to achieve.
Challenge and get performance evaluation