[SOLVED] Problem with code for 1 sec delay in Keil compiler

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hi
i need 1 sec delay
i hv written the code like
void delay()
{
for(i=0;i<1275;i++)
for(j=0;j<20;j++);
}
it is giving me 1/2 sec delay.bt how to calculate it? m using keil compiler n controller is ATMEL 89C51. can anybody help me?
 

Re: delay for 1 sec

basically time delay is based on code optimization in Keil compiler (how it optimize the loops)

If you need accurate delay, it is better to use timers

read this application notes https://www.keil.com/appnotes/files/apnt_105.pdf
 
Re: delay for 1 sec

Hi,

What Crystal Frequency you are using?

Regards,
Viswanath
 

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