well, we here in venezuela, and maybe other spanish speaking contries too, say CPU to refer to the case and everything inside of it, look at the atached pic. (cant remenber the proper english word for it at the moment)
the why of it is beyond me, i gues its just one of those dumb linguistic things that stuck trough time.
The whole computer is called a pc and a cpu is the central processing unit like how some computers have intel or amd processors. I'm curious on how you managed to burn one though.