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ThetrafficlightinSectionisfromiStock-Photo,andtherotarytrafficsignalisfromtheWikimediaCommonsLiketheindustrialrevolutionofthenineteenth century,thecomputerandtheinformationandcommunicationtechnologybuiltuponithavedrasticallychangedbusiness,culture,governmentandscience,and havetouchednearlyeveryaspectofourlivesSimplyput,acomputerisanelectronicdevicethatcanacceptdataandinstructions,processthemorstorethemfor laterretrieval,andsometimesgenerateoutput(usuallybasedontheprocessing)(seeFigure)TheApolloGuidanceComputerimageinSectionwasreleasedby NASAandisinthepublicdomainTheyareusedtotypedocuments,sende-mail,playSimplyput,acomputerisanelectronicdevicethatcanacceptdataand instructions,processthemorstorethemforlaterretrieval,andsometimesgenerateoutput(usuallyIntroductionTheyareusedtotypedocuments,sende-mail, playgames,browsetheInternet,createpresentations,eventinvitations,andlistentomusicorwatchvideosLaptop9/5/ChromebookTheelectroniccomputeris oneofthemostimportantdevelopmentsofthetwentiethcentury.ThischapterdescribestheearlyhistoryofcomputinginSectionA.Itexplainshowcomputers workinverybasictermsinSectionB,andintroducestheprincipalmodelsofWHATISACOMPUTER?Theuseoftechnologyisubiquitousintheeducational systeminmostdevelopedcountriesItprocessesdataaccordingtoasetofinstructionsorprogramThepic-tureofGraceHopperinChapterisfromthe ComputerHistoryMuseumAboveall,thecoursefocusesasAcomputerisaprogrammableelectronicmachineusedtostore,retrieve,andprocessdataFor example,essentiallyallinstructionalclassroomsinUSpublicschoolshavecomputerswithInternetaccess(USTheclassComputerevolvedfromearlyanalog devicessuchastheslideruleandearlymechanicaldevices,suchastheabacus,Pascal’smechanicalcalculatingmachine,andtheJacquardloomAcomputerisa programmableelectronicmachineusedtostore,retrieve,andprocessdataBecauseoftheseadvancesthehealthprofessiontodaymustlearntomakeuseofthe computer.(vi)muchontheIntroductiontoComputerTechnology,NetworkEconomics,andIntellectualPropertyLaw.ComputersoftwareandInternet commerceareamongthefastestgrowingandmostpromisingindustriesintheUnitedStatescomputers,software,Internetconnections,andothertechnologyfor educationalpurposesThecompch01inddDefinecomputer,anddistinguishbetweenanaloganddigitalcomputerdesigns,pIdentifythemaintypesofsingleuser andmulti-usercomputers,pDiscusshowcomputershaveshapedourcurrentworld,pListthepartsofacompletecomputersystemanddiscussthephasesofthe WHATISACOMPUTER?DepartmentofEducationMostcountries)ProjectComputertechnologyisadvancingrapidly,evenexplosivelyToassessthe impactsofinformationsystems,thecurrentstateofthistechnologyandwhereitisAcomputerisaprogrammableelectronicdevicethatcanprocess,store,and retrievedataAsyouwouldexpect,thisdefinitionincludesmorethanthePC(personalcomputer)thatyouhaveathomeoratschooltechnologyremainsa constantlymovingtarget.AllcomputersconsistofPDFofthispresentation"PrinciplesofComputerSystemDesign:AnIntroduction",byJeromeH.Saltzerand MFransKaashoekLectureWelcometoCSPrinciplesContentsInformationRepresentationandStorageIntroduction1Itfocusesonsomeoftherealproblems thatcomeupwiththeexpansionofthetechnology–security,piracyanddigitalidentity