Redstone Comparator Explaination Schematic

As you know the redstone update (1.5) was a big update, it added stuff like hoppers, droppers, redstone comparators and a redstone block. This update was a huge one for mapmakers because most of this stuff you could use to make a really awesome map! But the question is do you know about redstone comparators?Well if you do not know about redstone comparators dont worry because i have made a schematic that explains redstone comparators :D

If you want more schematics tell me and if you want me to make a specific one i will be happy to make it thnx :)
Also could you tell me what you think about me and if the schematics are good thnx ;)

You can download the schematic here!
http://www.mediafire.com/?ufgbu7z6rj9yyog