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 function of the 8255 Programmable Peripheral Interface?
💡 Hint: Think about its main purpose.
Question 2
Easy
Name the three ports of the 8255.
💡 Hint: They all start with the letter 'P'.
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 main purpose of the 8255 PPI?
- To control memory
- To act as a parallel I/O interface
- To convert analog signals
💡 Hint: Focus on its role in data communication.
Question 2
True or False: The 8255 PPI can operate in three modes.
- True
- False
💡 Hint: Think about how many different ways it can communicate.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
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.
Question 2
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.
Challenge and get performance evaluation