一种手持设备的智能卡实现技术

本文对智能卡作了简要介绍，给出了一台手持设备中的接触式智能卡的读写电路。该电路避免了智能卡的带电插拔操作，能有效地延长智能卡的使用寿命。本文同时探讨了智能卡的类型识别问题，提出了一种对ＡＴＭＥＬ公司各型存储器卡的识别办法，最后对“一卡多用”问题进行了讨论。

Implementation of the Smart Card in a Handheld Device

This paper gives a brief introducti on of the IC card which is also named Smart card,and provides a read/write circu it scheme of the contacted IC card in a handheld device.This circuit scheme avoi ds directly plugging the IC card in and out without shutting down the power and can effectively prolong the duration of the IC card.It also discusses an identif ication method for IC card types and proposes a method to identify all kinds of ATMEL memory cards.Finally,the problem of “one card with multi functio n”is discussed.