本代码用义隆单片机编写，台湾义隆单片机价格便宜，功耗低，集成资源丰富，在电话机鼠标等消费电子中占有绝对优势。



本代码可以读写西门子4442加密卡，自动兼容大唐电子的4C28卡，使用程序请直接调用源程序的读写模块，注意要先赋值安全码，在代码的最后是子程序，已经列明所占用资源。



SLE4442卡的接线顺序在代码中有图示。试验完全可以读写，有被注释掉的代码是测试程序。可以恢复后进行测试，请参照注释。 -The code prepared by Elan Singlechip, Taiwan Elan inexpensive single-chip, low power consumption, integrated resource-rich, in the phone such as consumer electronics in the mouse dominant. This code can read and write encrypted 4442 Siemens cards, automatically compatible with Datang 4C28 electronic card, use the program please call the source of the read-write module, attention must assign the security code in the code is the final subroutine has been set out in occupied resources. SLE4442 card terminal sequence in the code there are icons. Test is entirely possible to read and write, and the code is commented out test procedure. Can be resumed after the test, please refer to the Notes.