Hi Eng 4444,

If you aren't looking for a "time stamp" of time and date then what you should try is Darrel Taylor's "Elapsed Timer" program on this site. Your program can control when to start timing and when to stop timing. Melanie's "Olympic Timer" is another example of a start and stop timer. You should look at these two programs. Both of them output the result to an LCD display. Both of these programs use a background timer using the PIC's timers. You can have your PIC do the calculations based on the inputs and then display the results.

The May 2006 issue of Nuts and Volts magazine has a nice tutorial on using PIC timers including a sample program that should help you out understanding how these timers are used. I believe this forum also has numerous posts relating to using PIC timers. I personally am just starting to use them so I wouldn't be much help in the actual design of one at this point. I just have a basic understanding of how they work.