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1、 前言本教材共分三部分，现将Part A部分 编辑成电子教案，以便教师和同学讲课和学习。并对其中 的句型和词组多以双语进行讲解。通过学习，能使学生不 仅较全面的掌握计算机专业方面的知识，同时又能提高英 文的基本知识和阅读方法unit one: Information Systemsunit one: Information SystemsI:unit1-I:unit1- 51.51.pptppt Unit Two :Human-Computer Unit Two :Human-Computer InterfacesInterfaces2.2.pptppt Unit three: Operati
2、ng systemsUnit three: Operating systems3.3.pptppt Unite four: Database IntroductionUnite four: Database Introduction4.4.pptppt Unit five:Unit five:System Analysis and System Analysis and DesignDesign5.5.pptppt Unit six: Programming LanguageUnit six: Programming Languageunit6-unit6- 10unit6.10unit6.p
3、ptppt Unit seven: The Java LanguageUnit seven: The Java Languageunit6-unit6- 10unit 7.doc10unit 7.docUnit Eight:Software Unit Eight:Software EngineeringEngineeringunit6-10unit8.unit6-10unit8.pptppt Unit Nine:Unit Nine: A Software DevelopmentA Software Development unit6-10unit9.unit6-10unit9.pptpptUn
4、it Ten:Unit Ten:Computer NetworkComputer Networkunit6-unit6- 10unit10.10unit10.pptppt Unit ElevenUnit Eleven:Internet BasicInternet Basicunit11-unit11- 15unit11.15unit11.pptppt Unit twelve: COMPUTER Unit twelve: COMPUTER VIRUSESVIRUSESunit11-15unit12.unit11-15unit12.pptppt Unit ThirteenUnit Thirteen
5、: BridgesBridges，RoutersRouters，and Gatewaysand Gateways unit11-15unit13.unit11-15unit13.pptppt Unit FourteenUnit Fourteen : Network Network ApplicationsApplicationsunit11-15unit14.unit11-15unit14.pptppt Unit FifteenUnit Fifteen: What is AIWhat is AIunit11-unit11- 15unit15.15unit15.pptpptunit oneInf
6、ormation SystemsInformation SystemsAn information system has five parts：people， procedures，software，hardware，and data.When you think of a microcomputer，perhaps you think of just the equipment itself. That is，you think of the monitor or the keyboard. There is more to it than that. The way to think ab
7、out a microcomputer is as part of an information system. An information system has five parts： people，procedures，software，hardware ，and data（1）People：It is easy to overlook people as one of the five parts of a microcomputer system. Yet that is what microcomputers are all aboutmaking people， and user
8、s like yourself，more productive.Unite 1（2）Procedures：Procedures are rules or guidelines for people to follow when using software，hardware， and data. Typically，these procedures are documented in the manuals in manufactures which provide with their products.（3）Software：Software is another name for a p
9、rogram. A program consists of the step-by-step instructions that tell the computer how to do its work. The purpose of software is to convert data（ unprocessed facts）into information（processed facts ）.（4）Hardware：The hardware consists of the equipment：keyboard，mouse，monitor，system unit ，and other dev
10、ices. It actually processes the data to create information.（5）Data：Data consists of the raw，unprocessed fact ，including text，numbers，images，and sounds. Examples of raw facts are the hours you work and your pay rate. After data is processed through the computer，it is usually called information. An ex
11、ample of such information is the total wages owed you for a weeks work.In large computer systems，there are specialists who deal with writing procedures，developing software，and capturing data. In microcomputer systems，however， end users often perform these operations. To be a competent end user，you m
12、ust understand the essentials of information technology（IT），including software， hardware，and data.Although easy to overlook，people are surely the most important part of any information system. Our lives are touched every day by computers and information systems. Many times the contact is direct and
13、obvious such as when we create documents using a word processing program or when we connect to the internet. Other times，the contact is not as obvious. Nonetheless，computers and information systems touch our lives hundreds of times every day. Consider just the following four examples. （1）Software. S
14、oftware is of two kinds：system software and application software.Software，as we mentioned，is another name for programs. Programs are the instructions that tell the computer how to process data into the form you want. In most cases，the words software and programs are interchangeable.There are two maj
15、or kinds of software-systems software and application software. You can think of application software as the kind you use. Think of system software as the kind the computer uses.（2）System software. The user interacts with application software. System software enables the application software to inte
16、ract with the computer hardware. System software is“background”software that helps the computer manage its own internal resources.The most important system software program is the operating system，which interacts with the application software and the computer. The operating system handles such details as running （“executing”） programs，storing data and programs，and processing data. Windo
