普通的先进先出系统编程，很好用，很实用，针对FIFO-Ordinary FIFO system programming, useful, very useful

模拟页式存储系统，模拟内存的页式管理中FIFO、LRU、LFU、OPT置换算法的实现。-The realization of FIFO, LRU, LFU and OPT replacement algorithms in the page management of analog memory is simulated by the page type storage system.