摘要
介绍IC卡饮水机系统硬件结构、组成、工作原理。给出了控制器AT89C51与IC卡的接口电路并对其作了详细分析,结合西门子SLE4442卡的四个通信协议的时序关系,给出了相关软件编程的实现方法。
This topic is mainly about the hardware system,the architecture and working principle of warter-machine based IC card.Also the interface circuits between the controller (AT89C51) and IC card is described and precisely aralyzed.Associated with time-order which is provided by four communication protocols of Simens SLE4442 card.We give a method of programming implement.
出处
《青岛大学学报（工程技术版）》
CAS
2003年第3期93-97,共5页
Journal of Qingdao University(Engineering & Technology Edition)
