计算机原理与设计.PDF

0117401: OperatingSystem 计算机原理与设计 Chapter 1-1: OS overview 陈香兰 xlanchen@ /~xlanchen ComputerApplicationLaboratory,CS,USTC@Hefei EmbeddedSystemLaboratory,CS,USTC@Suzhou February 27,2019 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 温馨提示： 为了您和他人的工作学习， 请在课堂上关机或静音。 不要在课堂上接打电话。 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Outline What is OS? 操作系统的定义和目标 Roles of operating system 操作系统的层次模型 History of Operating Systems 操作系统的发展动力 1945~1955, 无操作系统 1955~1965，批处理系统 1965~1980，引入分时 1980~present，PC时代，百花齐放 1990~present，移动计算时代 其他操作系统 Personal-Computer Systems Parallel Systems Distributed Systems Embedded System 实验和小结 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . What isOS? ▶ Whatis operating system(操作系统,OS)? ▶ Whatoperating system do? An operatingsystem acts asan intermediary betweenthe user of a computer and the computerhardware. The purpose ofan operating system is to provideanenvironmentinwhichauser canexecute programs in a convenient and efficient manner. An operatingsystem is software thatmanages the computer hardware. (From 9th edition). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . What isOS? ▶ Therole