用VB软件开发定时关机系统，该程序在widow系统中可以实现定时关机，具备定时关机和延迟关机；另外，可显示当前时间，可选择或输入关机时间。-VB software development timing shutdown system, the program widow system can achieve regular shutdown, with regular shutdown and delayed shutdown　addition, you can display the current time, you can select or enter the shutdown time.