Many thanks for those who help me! (:
I got a problem here...
If i were to use 3 types of interrupts(external interrupt0, timer0 and timer1) in one single program, how should i go about writing the codes in the program?
Lots of too narrow assumptions in your answers.
You are still missing the issue.
Completely ignoring my argument:
My full text did specifically say...
No! You have a rigid mind, and have decided that you want to think that I am talking PC.
Give up, it's hopeless. You're venturing into another universe that operates according to completely rigid laws invented by its creator.