说明：  本例选用内部芯片为AT45D041A的符合国际IC卡标准。配合简单硬件电路就可以实现对接触式IC卡的读写操作。程序是用C语言实现。内有详细解释，可读性和移植性强。
(the cases selected for the internal chip AT45D041A of IC cards with international standards. With a simple hardware circuit can be achieved on the contactless IC card read and write operations. Procedure is used C language. Are explained in detail, readability and portability strong.)