采用最近久未使用算法，实现分页管理的缺页调度，每当程序所要访问的页面未在内存是，变向CPU发出一缺页中断。如果内存已经满，则需按照置换算法从内存中选出一页准备换出。-Recently, the use of using long algorithm missing pages paging management scheduling, whenever the procedure did not want to access the page in memory is that the chan