just have a look at these | Microcontroller › AVR › AVR ATMEGA8 › just have a look at these April 30, 2011 at 7:00 am #6064 dagakshayParticipant just have a look at these links http://www.engineersgarage.com/articles/avr-microcontroller http://www.engineersgarage.com/embedded/avr-microcontroller-projects/led-interface-circuit http://www.engineersgarage.com/embedded/avr-microcontroller-projects/setting-input-pin-circuit