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1、Chapter1IntroductiontoComputersChapterSummaryObjectivesOverviewExplainwhycomputerliteracyisvitaltosuccessintoday’sworldDefinetheterm,computer,anddescribetherelationshipbetweendataandinformationDescribethefivecomponentsofacomputerDiscusstheadvantagesanddisadvantage
2、sthatusersexperiencewhenworkingwithcomputersDefinetheterm,network,andidentifybenefitsofsharingresourcesonanetworkDiscusstheusesoftheInternetandWorldWideWebObjectivesOverviewDistinguishbetweensystemsoftwareandapplicationsoftwareDifferentiateamongtypes,sizes,andfunc
3、tionsofcomputersineachcategoryDescribetheroleofeachelementinaninformationsystemExplainhowhomeusers,smalloffice/homeofficeusers,mobileusers,powerusers,andenterpriseuserseachinteractwithcomputersDiscusshowsocietyusescomputersineducation,finance,government,healthcare
4、,science,publishing,travel,andmanufacturingAWorldofComputersComputersareeverywhereWhatIsaComputer?Acomputerisanelectronicdevice,operatingunderthecontrolofinstructionsstoredinitsownmemoryCollectsdata(input)ProcessingProducesinformation(output)InformationProcessingC
5、ycleWhatIsaComputer?TheComponentsofaComputerAcomputercontainsmanyelectric,electronic,andmechanicalcomponentsknownashardwareInputDeviceAllowsyoutoenterdataandinstructionsintoacomputerOutputDeviceHardwarecomponentthatconveysinformationtooneormorepeopleSystemUnitCase
6、thatcontainstheelectroniccomponentsofthecomputerthatareusedtoprocessdataStorageDeviceRecords(writes)and/orretrieves(reads)itemstoandfromstoragemediaCommunicationsDeviceEnablesacomputertosendandreceivedata,instructions,andinformationtoandfromoneormorecomputersormob
7、iledevicesAdvantagesandDisadvantages ofUsingComputersAdvantagesof UsingComputersDisadvantagesof UsingComputersSpeedReliabilityConsistencyStorageCommunicationsHealthRisksViolationofPrivacyPublicSafetyImpactonLaborForceImpactonEnvironmentNetworksandtheInternetAnetwo
8、rkisacollectionofcomputersanddevicesconnectedtogether,oftenwirelessly,viacommunicationsdevicesandtransmissionmediaNetworksandtheInternetTheInternetisawo
