I've got three sons I like to watch bike race.
Is there a way I can make a timer for the laptop in Excel that I use as
follows:
Press 'S' at the starting gun. Press '1' each time son 1 completes a lap
and place that lap time in a column, with the previous lap times. Be able to
do the same during the same race with the other sons, 2 and 3.
What kind of time resolution can I expect i.e. 1/10sec? 1/100sec?

I understand that this is a very general question, but if it seems like a
do-able project I can come back to the group later to ask specifics.

Thanks for being there.
Sam Beardsley