Cookie Per Megaupload><b>cookie What Does Cookies Refer To Per Computer Jargon?

What does cookies refer to per computer jargon? - cookie per megaupload>cookie

I've heard of "cookies" belongs in computer jargon. I've even deleted cookies from my computer, but do not really know what to do I delete and why, a good thing.

To fill me here please? What cookie this computer? Yes, I'm just a caveman.