Practice Controlling I/o Ports In C (2.2) - Microcontroller Fundamentals: 8051 Basic I/O and Timers
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Controlling I/O Ports in C

Practice - Controlling I/O Ports in C

Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

How many I/O ports does the 8051 have?

💡 Hint: Think about the naming convention of the ports.

Question 2 Easy

What does setting P1.0 to 0 do for an LED?

💡 Hint: Consider the wiring of the LED.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is the purpose of a pull-up resistor in a microcontroller circuit?

To ensure the pin is HIGH when not active
To increase the voltage of the pin
To decrease the current through the pin

💡 Hint: Consider what happens to a pin when a switch is opened.

Question 2

True or False: Setting P1.0 to LOW turns an LED on in a common cathode configuration.

True
False

💡 Hint: Reflect on the wiring and configuration of the LED.

2 more questions available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Design a system that turns on an LED when a switch is pressed and turns it off when released. Describe the proper use of ports and pull-up resistors.

💡 Hint: Think about how you handle a switch press in your code.

Challenge 2 Hard

Write a C program using bitwise operations to track the state of three LEDs connected to P0. All LEDs should respond when only one button on P2 is pressed.

💡 Hint: Consider how you can shift states based on a single input.

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Reference links

Supplementary resources to enhance your learning experience.