Thanks for your reply. I want to build Atmel 89 series microcontroller and external eprom like atmel 24c16. Your guess is absolutely right. I want to use external electrical gang bell.What type of controller are you using? What compiler?
And is this an actual bell or a buzzer or speaker of some kind?
Im guessing it is basically an alarm clock with many time sets through out the day for each class to start and end,
Where have you got with the project?