Professional Courses
Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Categories
Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
English Adventures
Knowledge
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the purpose of the 8255 PPI?
💡 Hint: Think about how a CPU interacts with devices.
Question 2
Easy
What does Mode 0 represent in the context of the 8255?
💡 Hint: Recall what handshaking means in data communication.
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 hex value of the control word for configuring Port A as output?
- 8AH
- 88H
- 80H
💡 Hint: Refer back to your control word calculation.
Question 2
True or False: The control word is only relevant for defining inputs.
- True
- False
💡 Hint: Recall the multifaceted role of the control word.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
How would you modify the assembly code to have Port A alternate its output between 0 and 55H for a given duration?
💡 Hint: Look at the previous examples of delays in assembly.
Question 2
Create a detailed flowchart for initializing the 8255 and sending a static output to Port A.
💡 Hint: Use symbols for start/end, processes, and decisions to visually convey the flow.
Challenge and get performance evaluation