设备管理--模拟磁盘调度算法。加深对操作系统原理的进一步认识，加强实践动手能力和程序开发能力的培养，提高分析问题解决问题的能力，培养合作精神，以巩固和加深磁盘调度的概念。-Equipment management-simulated disk scheduling algorithm. Deepen our understanding of the principle of operating system further understanding, strengthen practical ability and program development ability training, improve the ability of analyzing and solving problems, cultivate the spirit of cooperation to strengthen and deepen the disk scheduling concept.