Dear, I want to build a project which is based on online banking. I am going to use sms transaction facility such as to withdraw or transfer money. So when any user sends a sms with his acc. no. to another acc. no. then how the computer knows or microcontroller knows the accpount nos?
This sounds like a school project where _you_ are expected to look at a problem, figure out a solution and demonstrate that it works. Why then have us suggest how to do it?