Your reply is very helpful and I appreciate it.
Do i need to assign 'N' switches to save 'N' laps?
Can you please help me on how to save or retrieve the old lap ( It would be helpful, if you can be bit more specific)?
The first time you press START you start the stop watch.
Every new press of START starts a new lap and safes the time ( or timesramp) of the last lap.
I can't be more specific, because i don't know what hardware you use.
What memory do you use, and what interface, display?
is it a wrust type watch? What data format do you use?
What resolution?
How do you want to recall the data?