i wanted to make a rfid reader so where could i get the details about that!!!!

 

Did you intend to place this in the Homework section?

hgmjr

 

I'm sure it's supposed to be here.

 

I would research RFID reader schematics.

http://hackedgadgets.com/2006/05/09/homemade-rfid-reader/

Here is a home-made RFID reader that you can read up on.

Here is the Wikipedia article on the technology:

http://en.wikipedia.org/wiki/Radio-frequency_identification