实用的小程序，检验自己学习水平，练手的简单程序。设备管理。-A small utility program, test their learning level, the simple program in hand. Equipment management.

实用的小程序，检验自己学习水平，练手的简单程序。计算机机房管理。-A small utility program, test their learning level, the simple program in hand. Computer room management.