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 does a current-sinking configuration mean when interfacing an LED?
💡 Hint: Think about the connection to ground.
Question 2
Easy
Why is a resistor necessary in LED circuits?
💡 Hint: Consider what happens if too much current flows.
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
In which configuration does the LED glow when the microcontroller pin is set LOW?
- Current-Sinking
- Current-Sourcing
- Both
💡 Hint: Consider what happens to the current flow.
Question 2
True or False: A resistor is not required if the microcontroller can provide enough current.
- True
- False
💡 Hint: Think about what could happen to the LED.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Design a circuit diagram for interfacing an LED with a microcontroller in both configurations. Explain the pros and cons of each configuration.
💡 Hint: Focus on the differences in current paths and component roles.
Question 2
An LED requires 15mA to operate and has a forward voltage of 2V. If the microcontroller operates at 3.3V, calculate the required resistor value and discuss the importance of the resistor.
💡 Hint: Ensure you use the correct formula for resistor calculation.
Challenge and get performance evaluation