Interesting, I was just reading about this yesterday. I often remind myself that a computer talks in 1's and 0's. How it translates this is then what you see. For example the byte 0010 0011 is always the same as it flyes around a computer but how its translated end to end can APPEAR different. A browser may show it as one character whereas in ASCII it might show as another.

Here is an example of what I mean, I found this yesterday http://www.ascii.cl/htmlcodes.htm I found another good one yesterday that actually gave it in bits as well but I can't find that now.