hello everyone; i have one machine in which i m having controller c8051f020 i have set time of 2hours and it is decrementing for the test which is done on the machine. i am changing rtc frequency to less than 1sec so that i can see the change with fastter time. rtc is used is ds1307. time is decremented in 1sec as rtc frequency taken is 1 hz which is set in the 0x07 register of rtc i am decrementing is to 250usec i.e frequency selection is 4.096KHz again i hav one more interrupt of 4msec (timer 3) which i have decremented to 200usec for the fast operation in which key detection and other processes are done but still process is slow. and i placed breakpoint in while(1) loop but still it is taking time. how all this is affected to while(1) loop? pls explain, what else i can do to decrement time faster, in case any doubts, pls let me know regards good day