SystemSoftwareChapter 4ComputingEssentials20142014byMcGraw-Hill Education.This proprietary material solelyforauthorizedinstructoruse.Notauthorizedforsaleordistributioninanymanner.Thisdocumentmaynotbecopied,scanned,1.0Poos
System Software Computing Essentials 2014 © 2014 by McGraw-Hill Education. This proprietary material solely for authorized instructor use. Not authorized for sale or distribution in any manner. This document may not be copied, scanned, duplicated, forwarded, distributed, or posted on a website, in whole or part. © 2014 by McGraw-Hill Education. This proprietary material solely for authorized instructor use. Not authorized for sale or distribution in any manner. This document may not be copied, scanned, duplicated, forwarded, distributed, or posted on a website, in whole or part. Computing Essentials 2014 System Software Chapter 4
概述■系统软件:一系列无需用户干预、控制和协调计算机及外部设备、支持应用软件开发和运行的软件集合工程师们将各类软件都需要的一些基础工作写成专门的软件(系统软件),提供给开发者,如:■管理计算机资源、监视计算机性能■使用和管理输入/输出设备将用高级语言写的程序转换成计算机可以执行的指令SystemSoftwareComputing Essentials 20142014by McGraw-Hill Education.This proprietary material solelyforauthorizedinstructoruse.Notauthorizedfor saleor distribution in anymanner.This documentmaynot be copied, scanned,2duplicated,forwarded,distributed,orpostedonawebsite,inwholeorpart
System Software Computing Essentials 2014 © 2014 by McGraw-Hill Education. This proprietary material solely for authorized instructor use. Not authorized for sale or distribution in any manner. This document may not be copied, scanned, duplicated, forwarded, distributed, or posted on a website, in whole or part. 概述 ▪ 系统软件: ▪ 一系列无需用户干预、控制和协调计算机及外部设 备、支持应用软件开发和运行的软件集合 ▪ 工程师们将各类软件都需要的一些基础工作写成专 门的软件(系统软件),提供给开发者,如: ▪ 管理计算机资源、监视计算机性能 ▪ 使用和管理输入/输出设备 ▪ 将用高级语言写的程序转换成计算机可以执行的指 令 2
系统软件的类型■操作系统(operatingsystems)■实用程序(utilities)设备驱动程序(device drivers)7语言处理程序(languagetranslators)SystemSoftwareComputing Essentials20142014by McGraw-Hill Education.This proprietary material solelyforauthorizedinstructoruse.Notauthorizedfor saleor distribution in anymanner.This documentmaynot be copied, scanned,3duplicated,forwarded,distributed,orpostedonawebsite,inwholeorpart
System Software Computing Essentials 2014 © 2014 by McGraw-Hill Education. This proprietary material solely for authorized instructor use. Not authorized for sale or distribution in any manner. This document may not be copied, scanned, duplicated, forwarded, distributed, or posted on a website, in whole or part. 系统软件的类型 ▪操作系统(operating systems) ▪实用程序(utilities) ▪设备驱动程序(device drivers) ▪语言处理程序(language translators) 3
1.操作系统(OperatingSystems用户■操作系统:应用软件■计算机系统最重要的程序也称为软件运行环境、软操作系统件运行平台硬件■操作系统的主要功能:Sollware管理计算机资源■运行应用程序Peonb■提供用户与计算机的操作接口ApplicationSottwartSystemSoftwareComputingEssentials20142014byMcGraw-Hill Education.Thisproprietarymaterialsolelyforauthorizedinstructoruse.Notauthorizedforsaleordistribution inanymanner.This documentmaynotbecopied,scannedAduplicated,forwarded,distributed,orpostedonawebsite,inwholeorpart
System Software Computing Essentials 2014 © 2014 by McGraw-Hill Education. This proprietary material solely for authorized instructor use. Not authorized for sale or distribution in any manner. This document may not be copied, scanned, duplicated, forwarded, distributed, or posted on a website, in whole or part. 1. 操作系统(Operating Systems) ▪ 操作系统: ▪ 计算机系统最重要的程序, 也称为软件运行环境、软 件运行平台 ▪ 操作系统的主要功能: ▪ 管理计算机资源 ▪ 运行应用程序 ▪ 提供用户与计算机的 操作接口 4
操作系统的作用举例■启动计算机:■协调资源的使用:■准备运行环境,包括加■多个程序都要使用处理器、内存、输入/输出载软件、初始化设备等设备等■提供用户接口:■任务调度:■提供操作界面、提供启■多个任务按什么顺序执动应用程序的方法、支行?持用户与应用程序交互■监视系统性能■运行应用程序:■将程序代码从磁盘读入■提供系统运行的详细信息,如CPU利用率、内内存,把指令地址装入处理器等存使用率等SystemSoftwareComputingEssentials20142014byMcGraw-Hill Education.Thisproprietarymaterialsolelyforauthorizedinstructoruse.Notauthorizedforsaleordistribution inanymanner.This documentmaynotbecopied,scannedduplicated,forwarded,distributed,orpostedonawebsite,inwholeorpart
System Software Computing Essentials 2014 © 2014 by McGraw-Hill Education. This proprietary material solely for authorized instructor use. Not authorized for sale or distribution in any manner. This document may not be copied, scanned, duplicated, forwarded, distributed, or posted on a website, in whole or part. 操作系统的作用举例 ▪ 启动计算机: ▪ 准备运行环境,包括加 载软件、初始化设备等 ▪ 提供用户接口: ▪ 提供操作界面、提供启 动应用程序的方法、支 持用户与应用程序交互 ▪ 运行应用程序: ▪ 将程序代码从磁盘读入 内存,把指令地址装入 处理器等 ▪ 协调资源的使用: ▪ 多个程序都要使用处理 器、内存、输入/输出 设备等 ▪ 任务调度: ▪ 多个任务按什么顺序执 行? ▪ 监视系统性能: ▪ 提供系统运行的详细信 息,如CPU 利用率、内 存使用率等