一款基于标准IC卡考勤数据读写操作示例的开发源程序。主要给需要开发IC卡和考勤系统的网友学习参考用，该示例示例一些对考勤机操作的dll文件。涵盖了对IC卡操作的全部功能示范。 -A standards-based IC card data read and write operations attendance sample source development. Mainly to the need to develop IC cards and attendance system ref