about the traffic and clicks

hi guys
this could be silly question.. but i am asking you all..

how does google search engine counts the clicks.

for example at my office.. there are 16 computers? and i forwarded my site's url to them. Now each one of them will click on my site. Now the question is will it be counted at 16 click on 1 click from one IP. Coz after all my office's ISP is one.

secondly.. about the FireFox there is option "show tabs from last time". that means everyday i open my FF along with that my site is also opening.. will that count my site's traffic..

if not than what is the method of counting number click to your site. And from where do i check that number of click is been hits on my site.
and also clicks sub pages, will dat clicks will be added to hits?

I think the 16 clicks will appear to be from the same computer and they will not be counted.

i check my site clicks through statcounter... and also i can track the ips that visited to my site...

im not sure if how they calculate clicks or somehow can determine it because its a top secret

@sezerb: but what if 16 clicks from same computer.. in 16days.. and one click per day?