SLE4442及其在电子肺活量计上的应用

SLE4442 and its application at electronic spirometer

文章介绍了逻辑加密卡SLE4442工作原理及其在肺活量计上的具体应用过程,并设计了一种通用的IC卡接口电路。最后给出了读写卡的软件流程图,及具体的实现程序。

This paper introduces the working principle of logic encryption card SLE4442 and its concrete application at spirometer, and also the design of a general IC card interface circuit. Finally, the read-write card software flow chart, and realization procedure is presented.