Time and Attendance system. Operation of the system, the login screen for the im...

代码说明：

考勤系统.运行本系统时，登录界面要求输入系统的用户名和密码，此系统提供了两种类型的用户，一种是超级用户，具有执行所有功能的权限，另一种是签到用户，只具有签到功能，因此，这里提供了两个默认的用户名和密码，一个是超级用户，用户名为000，密码为000，另外一个是签到用户，用户名为111，密码为111。-Time and Attendance system. Operation of the system, the login screen for the importation of the system user name and password, the system provides two types of users, one is the super-user, with the implementation of all functions of the authority, another is a sign-user, only sign function, so, here are two default user name and password, a super-user, the user name 000, password 000, the other one is the sign user, the user name 111, password is 111.