操作系统课程设计作业 虚拟实现操作系统的请求分页模块 实现了FIFO,LRU,最后输入-1可调用最佳置换算法 按提示输入即可。-Operating System Course Design work to achieve the operating system virtual page module at the request of the FIFO, LRU, the last input-1 can be called the best replacement algori