stop watch using verilog

Prasanna M. wrote:
> please help me do stop watch in verilog
No one is interested in doing YOUR homework. First step is, that YOU do 
something, then you encounter a problem and ask for help.

And, by the way: do you know Google, that search machine on the 
internet? Try that to see how others solved a similar exercise: 
http://www.google.de/search?q=verilog+stop+watch
Try to understand what they did and re-use it for your solution...