Dear paulPIC

I'm wondering how those schematics get into your hands and why are you rushing to get that "device" running ,before you even know how a microcontroller work !
Here's a friendly advice :
Start with PIC MICROCONTROLLERS --- AN INTRODUCTION TO MICROELECTRONICS by MARTIN BATES .
It's a book for people without any ideea about programming ! Exactly as you are . If you read that book ,you will get a basic understanding of what you need to know ,to become ,with a lot of work , a programming guru !
Good Luck!
aetosat


P.S. what you got there is a portable magnetic reader,with a key pad to issue specific commands to the controller and serial communication to retrieve the stored data in the external eeprom!nice work