说明：  操作系统实验四：连续式与分页式主存管理的模拟实现 模拟在连续分配与分页管理两种方式下，主存空间的分配与回收，帮助学生加深了解存储器管理的工作过程。 注意，该实验为模拟实验，并不要求进行真正的内存分配与回收，主要是编写程序模拟其中过程即可。
(four experimental operating system : Continuous and pagination main memory management simulation simulation in a row and pagination distribution management in two ways, Main storage space for the distribution and recovery, to help students better understand the storage management process. Noted that the experiment simulated experiment, does not require real memory allocation and recovery, preparation procedure is the process which can be simulated.)