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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。
This text has made a brief introduction to the smart card, has given the read-write circuit of the contact type smart card in a hand-held device. The circuit to avoid the smart card hot swap operation, can effectively extend the life of the smart card. This paper also discusses the type identification of smart cards, and puts forward a way to identify various types of memory cards in ATMEL. Finally, the issue of “one card multi-use” is discussed.