说明：  智能IC卡燃气表控制系统里的工作是在软件支持下完成各项功能的，本装里的软件采用单片机的汇编语言编写，由于汇编语言编写的程序，结构紧凑，效率高，程序全部固化在AT89C51单片机的程序存储器中
(smart card gas meter control system of the work is the software support from the various functions, Lane installation of the software used MCU is written in assembly language, as written in assembly language procedures, compact, high efficiency, All the procedures in curing AT89C51 program memory)