论文：通用预付费安全组件技术研究-下位机， 完成了智能卡的读取、分辨、和处理相关卡的各项功能，做到安全、可靠地使用。 -Thesis: Universal pre-paid security components of technology research- the next-bit machine, completed a smart card reader, resolution, and dealing with the various functions related to