这是一个空间分配与回收的课程设计。。 具体的的步骤大家可以看。 1.　　实验原理：在系统初始化话时。主存除了操作系统所占部分外。整个用户区是一个大的 空闲区。可以按作业所需空间大小顺序分配空闲区直到不够为止。当作业结束时，它的占用分区被回收。这个空闲区又可以根据新作业的大小重新分配，所以主存中的已占分配和空闲区的数目和大小都是在变化的，可以用两张表“已分配区表”和“空闲区表”来记录和管理-This is a space allocation and recovery of curriculum design. . Specific steps everyone can see. 1. Experimental principle : the system initialization words. In addition to the main deposit as part of the operating system outside. Users whole area is a major leisure area. According to space operations, order allocation idle until the district far enough. When operating at the end of its occupation through recycled. This free zone can operate under the new redistribution of the size, the main deposit accounts and the distribution of free number and size are changing, you can use Table 2 "has been allocated District Table" and "leisure District Table" to record and management