What is interrupt?
http://letusembed.com/2015/04/what-is...
How to configure a timer in 8051?
http://letusembed.com/2015/05/8051-ti...
A let us embed tutorial on 8051 interrupts using AT89S52 we configured a timer 0 and we used the timer 0 overflow as a interrupt and we can toggle the led using the interrupt service routine.
For Program please refer http://letusembed.com/2016/01/8051-in...
Going advance
http://letusembed.com/2016/01/interru...
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