网上调查系统主要有管理员指定调查，员工填写调查，查看调查，查看调查统计结果三大功能。-Online survey system to investigate the main administrator, employees fill out the survey, see the survey, view the survey results of the three major functions.

USB转串口和USB鼠标开发的测试程序，以供USB爱好者学习-USB to serial and USB mouse developed testing procedures for USB enthusiasts to learn