hy i am doing project on ” An Automatic Queue Management System “. I am using ir transmitter and receiver for automatic counting purpose. 38 khz generating tshop is used. i have problem in coding that using comparater( atmega16 microcontroller)output how to increase count of 7 segment display, when to stop and when to use buzzer. Please any onw help me plzzzz. I will be very mch thankful to u.