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1、Chapter1ComputerHardware1What’sinside?Inthischapter,youwill:GainanoverviewofcomputerequipmentandterminologyLearnhowcomputersareclassifiedLearnhowpersonalcomputersfitintothegamutofmachinesfromPDAstosupercomputersReviewbasiccomponentsofatypicalpersonalcomputersystemLookinsi
2、dethesystemunitExploreadvantagesanddisadvantagesofseveralcomputerstoragedevicesLearnsomebasicsaboutmaintainingyourcomputerandtroubleshootingproblems2PracticalComputerLiteracy,3rdEditionWhatisacomputer?Adevicethat:AcceptsinputProcessesdataStoresdataProducesoutput3Practical
3、ComputerLiteracy,3rdEditionWhatisacomputer?Computerinputiswhateveristyped,submitted,ortransmittedtoacomputersystemDatareferstosymbolsthatrepresentfacts,objects,andideasProcessingismanipulationofdataMosttakesplaceincentralprocessingunit(CPU),acomputer’s“brain”Computerprogr
4、amsareinstructionsthattellcomputershowtoprocess4PracticalComputerLiteracy,3rdEditionWhatisacomputer?AnoperatingsystemissoftwarethathelpsacomputeroperateefficientlyandkeeptrackofdataApplicationsoftwarehelpsusers“apply”computerstospecifictasksMemoryistemporarystorageStorage
5、ispermanentComputeroutputisresultsproducedbycomputer5PracticalComputerLiteracy,3rdEditionWhatisacomputer?6PracticalComputerLiteracy,3rdEditionHowarecomputersclassified?Computersaredividedintofivecategories:HandheldcomputersPersonalcomputersServersMainframecomputersSuperco
6、mputers7PracticalComputerLiteracy,3rdEditionHowarecomputersclassified?Handheldcomputer(PDA)featuresinclude:Smallkeyboardortouch-sensitivescreenDesignedtofitinyourpocketRunsonbatteriesUsedwhileholdingit8PracticalComputerLiteracy,3rdEditionHowarecomputersclassified?Apersona
7、lcomputerisdesignedtomeetthecomputingneedsofanindividualDesktopcomputersfitondesksandrunonpowerfromwalloutletsANotebookcomputer(laptop)incorporatesscreen,keyboard,storage,andprocessing9PracticalComputerLiteracy,3rdEditionHowarecomputersclassified?10Atabletcomputerisportab
8、le,featuringatouch-sensitivescreenusedforwritingordrawingAserverisusedtoservedatatocomputersconn
