u014612859的专栏

进程的定义：进程的构成：

操作系统的定义：

虚拟内存：Virtual memory – separation of user logical memory from physical memory.1.Only part of the program needs to be in memory for execution2.Logical address space can therefore be much larger th

文件操作：File is an abstract data type Create Write Read Reposition within file Delete Truncate Open(Fi) – search the directory structure on disk for entry Fi, and move the content

磁盘结构：磁盘性能参数L

内存管理的背景知识：

Common concepts Port Bus (daisy chain or shared direct access) Controller (host adapter) I/O instructions control devices Devices have addresses, used by Direct I/O instructions M