avr - What is the purpose of a pull-up resistor in a microcontroller? - Electrical Engineering Stack Exchange
Controlling AVR I/O ports with AVR-GCC - Embedds
AVR I/O Port Programming - javatpoint
ATMEL AVR Tips – Input Output Ports Code Snippets – Embedded Electronics Blog
AVR microcontrollers - Wikipedia
AVR basics: reading and writing GPIO pins - Machina Speculatrix
what happened if write an input pin? | AVR Freaks
Avr Atmega Atmega1632 Gpio Ports And Registers | Avr Atmega
c - Set DDR and PORT registers based on pin number (AVR)? - Electrical Engineering Stack Exchange
Avr Atmega Atmega1632 Gpio Ports And Registers | Avr Atmega
AVR GPIO TUTORIAL – Techawarey
ATMEL AVR Tutorial 2 : How to access Input / Output Ports ? – Embedded Electronics Blog
LAB 1 a) Test the AVR's ports for input operation as | Chegg.com
2. Switch a LED on
Types of AVR Microcontrollers - ATmega32 & ATmega8, Their Working
Using the AVR RESET Pin as an Input - Wayne's Tinkering Page
AVR I/O Register Configuration - Tutorials
AVR Microcontroller with Core Independent Peripherals and PicoPower technology
Pin diagram of 8051 Microcontroller - GeeksforGeeks
I/O Port Operations in AVR » maxEmbedded
microcontroller - Difference between reading PORT and PIN - Electrical Engineering Stack Exchange
Digital Input/Output Ports on AVR - Developer Help
AVR GPIO TUTORIAL – Techawarey
Week 9 : Embedded Programming
Salah's Week 8
