unit 4 system software.ppt

Unit4Software PARTASystemSoftware COMPUTERENGLISH Today sContents Review 1 SystemSoftware 3 NewWordsandExercise 4 SoftwareIntroduction 2 COMPUTERENGLISH SystemSoftware 2 DifficultPointTheexplanationsforcomplicatedstatements 1 KeyPointNewwordsandphrasesaboutMonitor COMPUTERENGLISH 1Review MonitorReviewCRTLCDKeySpecificationSize 18 Contrastratio 800 1Aspectratio 4 3Max Resolution 1024 800Brightness 250CD MResponsetime 25msDotpitch 294mmdimensionsWidth 16 4inDepth 7 5inHeight 16 7inWeight 15 7lbWarranty 3yearsPowerconsumption 38wattsExteriorcolor blackPlatform pc mac SamsungSyncmaster910t19 LCDMonitor COMPUTERENGLISH 1Review PrinterReview Ink jetPrinter 喷墨打印机 LaserPrinter 激光打印机 ThermalPrinter 热能打印机 Dot matrixPrinter 点阵式打印机 COMPUTERENGLISH 1Review 从2006年6 17 6 24打印机市场品牌调研 HPEPSONCanonLenovoSamsungLexmarkKonicaMinoltaXeroxFounderBrother 30 06 28 13 20 79 9 08 4 32 1 57 1 49 1 39 0 97 0 75 1 47 COMPUTERENGLISH 1Review DVDReview DVD DigitalVideoDisc DVD ROMDVD VideoDVD RAMDVD R 数字化视频光盘视频存储DVD单次写入式DVD可覆写式DVD只读式DVD COMPUTERENGLISH 1Review OpticalDisk CompactDisk光盘CD ROM只读式光盘DVD数字化视频光盘DVD ROM只读式DVDDVD Video视频存储DVDDVD RAM可覆写式DVDDVD R单次写入式DVD graphics n 图形block n 块 字 信息hardcopy硬拷贝 复印文本 复制件impactprinter击打式打印机dot matrix n 点阵spray vt 喷射 喷溅drum n 鼓 滚筒 圆筒CPS 每秒字符数thermal adj 热量的 温度的 darken vt 弄黑 变暗 使 模糊 exposure n 曝光 曝光度 COMPUTERENGLISH Questions 1 WhydoyouthinkthatOperatingSystemsarenecessaryinorderforacomputertoruneffectively 2 ExplainfourtasksperformedbyanOperatingSystem 3 TherearemanydifferentbrandsofOperatingSystem Identifyfourofthemostcommonones 4 ExplainhowanOperatingSystemcanmanagenumerouspeopleworkingatthesametime Whatisthiscalled COMPUTERENGLISH exercises COMPUTERENGLISH 2SoftwareIntroduction Softwareiscomputerinstructions 指令 ordata Anythingthatcanbestoredelectronically 电子地 issoftware Thedistinction 区别 betweensoftwareandhardwareissometimesconfusing 搞乱 becausetheyaresointegrally 完整地 linked 连接 Clearly whenyoupurchase 购买 aprogram youarebuyingsoftware Buttobuythesoftware youneedtobuythedisk hardware onwhichthesoftwareisrecorded Withoutsoftware acomputerisjustablackboxofelectronicequipmentthatisincapable 不能 ofanyusefulfunction 功能 Softwaretellsthecomputerwhattodoandwhentodoit Wewilllookatthedifferenttypesofsoftwarethatweneedtoknowabout COMPUTERENGLISH 2SoftwareIntroduction Therearetwomaintypesofcomputersoftwarethatyouneedtoknowabout systemsoftwareandapplication 应用 software TypesofSoftwares Systemsoftwareincludestheoperatingsystem 操作系统 utilityprograms 功能软件 anddriverthatcontrolhowthehardwareofacomputerworks Applicationsoftwareincludestheeveryday 日常 programsthatyouusesuchasWordProcessors Spreadsheets 电子数据表 andDatabases 数据库 Italsoincludese mailpackages 包 webbrowsers 浏览器 andanti virus 反病毒 software COMPUTERENGLISH 3SystemSoftware 3 1OperatingSystem OS Acomputerismadeupofphysicalparts 元件 forexamplememory harddisk motherboard CPUandsoon Butwithoutamethodofco ordinating 协调 theiruse theyareofnoparticular 特别的 usetoanyone Thetaskofco ordinationisgivenovertoapieceofsoftwarecalledtheoperatingsystem Theoperatingsystemispartofthesystemsoftware itisneededtomakethesystemwork Allcomputershaveanoperatingsystem Itcontrolsthehardwareandisthelink 连接物 betweenyouandthecomputer Inotherwords 换句话说 Itisaprogramthatallowsapplicationssoftwaretocommunicate 通信 withthehardware COMPUTERENGLISH 3 1OperatingSystem COMPUTERENGLISH 3 1OperatingSystem TypesofOSTherearequiteafewoperatingsystemsavailable 可获得的 forcomputersbuttheyallbasicallydothesametaskofhandling 处理 thebasicoperationsthecomputer Windows Thisoperatingsystemisverywidelyusedonpersonalcomputersandcomputernetworks 网络 CommonofficeapplicationssuchasExcelrunonthissystemMacOSThiswascreatedbythemakersoftheMacintosh 麦金托什机 personalcomputertorunexclusively 专用的 onthemachinesUnixApowerfuloperatingsystemcommonlyfoundonlargesystemssuchassuper computersandmainframes Itisespecially 特别地 goodatallowingmanyuserstousethecomputersystematthesametime LinuxAclose 亲密的 relative 亲属 ofUnixandisincreasingly 日益地 foundrunningWebservers 服务器 andothercomputernetworks Itcanjustaseasilyrunapersonalcomputer COMPUTERENGLISH 3 1OperatingSystem MaintasksofanOSLoads 加载 andrunapplications morethanoneapplicationcanrunatthesametime multitasking多任务 Shares 分享 outtheavailablememory Movesdatatoandfromharddiskandotherstoragedevices Communicates 通信 withperipheralssuchasprintersAcceptsdatafrominputdevicessuchaskeyboardandmouseSendsdatatothecorrectoutputdevicessuchasmonitororprinterItprovidesa humancomputerinterface HCI 人机交互界面 toallowpeopletousethecomputerefficiently 有效地 e g WindowsinterfaceSecuritymanages 安全管理 suchastheuseofpasswords 密码 Loggingin 登录 requirestheOperatingSystemtoconnecttheusertothecorrectdirectory 目录 andassign 指派 therightprivileges 特权 Allocates 分配 resourcessuchasprintersandfilestorage thesehavetosharedbetweenallusers COMPUTERENGLISH 3 2Utilityprograms 功能程序 Utilityprogramsareanotherextremely 非常地 usefulsetofsystemssoftware Autilityprogramisdesignedtodooneorperhapstwotasksverywellandnothingelse Quiteoften aUtilityprogramisbuiltrightintotheoperatingsystem ForexampleWindowsXPhasabuiltin 内嵌的 Zip compression 压缩 utilityyoucanusetocompressafile 文件 orfolder 文件夹 ThingsaUtilityprogramcando Filesorting 排序 FilerenamingFileconversion 转换 e g convertasoundfiletoMP3 Filerepair 修护 Diskmonitoring 磁盘管理 anddefragmentation 磁盘碎片整理 defragging PrintingjobsBackingup 备份 dataAnti Virus 反病毒 Notethatautilityprogramonlydosoneorperhapstwoofthese COMPUTERENGLISH 3 2Utilityprograms 功能程序 Utilityprogrammesprovidea toolbox 工具箱 ofcommontasksneededtokeeptheco mputeringoodorder Thepi cturebelowshowsutilityprogrammessupplied 提供 withWindowsXP The DiskDefragmenter forexamplewillre arrange 重新排列 thefilesontheharddisktoimproveperformance 性能 andspeedupaccess Ifyouroperatingsystembecomesdamaged 被损坏 orcorrupted 被打断 SystemRestore 系统恢复 willrecreate 重新创建 theoperatingsystemfromapreviousbackup 以前的备份 COMPUTERENGLISH 3 3driver Adriverisanotherpieceofessential 基本的 systemsoftware Adriverisaspeciallywrittenprogramwhichtranslates 翻译 thecommands 命令 fromtheoperatingsystemintocommandsthathardwareunderstands forexamplestheprinter mousea