计算机专业英语.ppt

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1、丛书主编凌云主编许春勤副主编赵林娟丁育萍计算机专业英语电子教案高等职业教育计算机技术专业贯通制教材UNIT1TheEvolutionofComputerUNIT2ComputerApplicationUNIT3CPUUNIT4ComputerMemorySystemUNIT5TheIntroductiontoMotherboardUNIT6Input/OutputDevicesUNIT7HowtoselectapersonalcomputerUNIT8TheCodeSystemUNIT9ASCIICodeUNIT10BooleanalgebraandSetalgeb

2、raUNIT11OperatingSystemUNIT12TheIntroductiontoWindowsVistaUNIT13MicrosoftOfficeUNIT14CProgramLanguageUNIT15Whatisobject-orientedprogrammingUNIT16OverviewofDatabaseUNIT17SQLServer2000UNIT18MultimediaUNIT19MultimediaTechnologyUNIT20TheIntroductiontoComputerNetworkUNIT21LANUNIT22TheIntrod

3、uctiontoISO/OISUNIT23InternetUNIT24DomainNameUNIT25Anewkindofmaliciousnetworksoftware----PharmingUNIT26DigitalWalletsUNIT27ElectronicCommerceUNIT28ComputerVirusesUNIT29ThecommonmethodstodealwiththevirusesUNIT1TheEvolutionofComputerObject:1．Whatiscomputer?2．Howmanygenerationshavethecomp

4、utershave?3.Whatarethefeaturesofeachgeneration?ThisisUNIT1Returntomainpage1.1Whatiscomputer?Acomputerisadevicethatacceptsinformation(intheformofdigitalizeddata)andmanipulatesitforsomeresultbasedonaprogramorsequenceofinstructionsonhowthedataistobeprocessed.Itcanaccept,store,andprocessda

5、taandproduceoutputresults.ThisisUNIT1Returntomainpage1.2TheFirstComputerThefirstdigitalcomputerENIACwasinventedin1946.Itcontained18,000vacuumtubesandhadaspeedofseveralhundredmultiplicationsperminute,butoriginallyitsprogramwaswiredintotheprocessorandhadtobemanuallyaltered.Theinventionof

6、ENIACmarkedthebeginningofthefirstcomputerphase.ThisisUNIT1Returntomainpage1.3Computers’FourGenerationscomputershavehadfourgenerations,whicharecharacterizedbyvacuumtubes,transistors,smallandmediumscaleICandverylargescaleintegrated(VLSI)circuitsrespectively.ThisisUNIT1ReturntomainpageFir

7、stgenerationcomputersIn1950,thefirstgenerationcomputers,whichusedvacuumtubescameout.Theywerelarge,costlytobuy,expensivetopowerandoftenunreliable.Buttheystillmadegreatcontributionstocomputerscience,suchastheconceptsofstoredprograms,randomaccess.ThisisUNIT1ReturntomainpageSecondgenerat