【摘要】 重点介绍智能卡操作系统COS的四大基本功能:传输管理、命令解释、文件管理和安全管理。在此基础上,提出COS新的体系结构,并构建出各模块的状态转换图,最后根据项目实践总结该结构的优点。更多还原

【Abstract】 Mainly introduces smart card and all modules in COS, including communications, security, command, file system, hardware bottom driver, brings forward the new system structure of smart card COS and state transition diagram of all modules, carries out the merit summing up this structure according to the project.更多还原