In this paper , i first studied basic theories of rfid system , including algorithms of encryption , theory of crc ( cyclic redundancy check ) , i / o techniques of mcu . then , i designed the reader of rfid system applied to electronic anti - forgery by the way of ip design based on mcu 89c51 , co - designing the software and hardware of the reader 本文首先研究了用于rfid系统的基本理论,包括密码学、校验理论、单片机接口技术等;基于这些理论,以mcu ( 89c51 )为核心进行了电子防伪rfid系统阅读器的ip设计,对阅读器进行软硬件模块划分并协同设计。