Unit3-Computers-课件

Unit3ComputersPeriod1Period2Period3Period4Period5Period6Period1LookatthefollowingpicturesandsaytheirEnglishnames.abacuscalculatorhugecomputerPClaptopPDArobotWhat’snext?keyboardmousemonitorscreenspeakerhostcomputerWhatEnglishwordsdoyouknowaboutcomputers?Canyounumberthefollowingpicturesaccordingtothetime?Pleasediscusswhattheyhaveincommon.laptoprobotPDAPChugecomputercalculatorabacus•Ithinkthat…•Inmyopinion…•Ibelievethat…•What’syourreason?•Whydoyouthinkso?1.Theycanbeusedforcalculating.2.Theycandealwithmathsproblems.3.Theyareourfriends.4.Theyareusefulandhelpful.Whatdotheyhaveincommon?Whatcancomputersbeusedtodo?Pre-reading:HowdoyouusecomputersandtheInternet?1.Helptodohomework2.Playcomputergames3.Sende-mails4.Listentomusic5.Seemovies6.Chat(聊天)7.Searchforinformation8.Doshopping9.LearncomputerskillsYesNoIoftenuseacomputerto…,Isometimesuseitto…,andIneveruseitto…Computershavegreatpower.Theymakeourlivesmorecolorfulandmoreconvenient.BUTDon’tjustusecomputersforfun.Don’tspendtoomuchtimeinplayingcomputergamesorchatting(聊天)online.Weshouldlearnmorecomputerskillswhichareveryusefulinourfuturework.Reading:WhoamI?Fast-reading:1.Whoisthespeakerinthisstory?Acomputer.2.Writedownthreesentencesfromthestorytosupportyouridea.1)IwasbuiltasanAnalyticalmachinebyCharlesBabbage.2)Myrealfather,AlanTuring,…3)Iwasalwayslonelystandingtherebymyself,untilinearly1960stheygavemeafamilyconnectedbyanetwork.Listenandanswerthequestions.1.Wherewasthespeakerbornin1642?InFrance.2.Whathappenedtothespeakerafternearlytwohundredyears?HewasbuiltasanAnalyticalMachinebyBabbage.3.Whatwasthespeakercalledin1936?Auniversalmachine.4.Whathappenedtothespeakerinthe1970s?Hewasusedinofficesandhomes.16421822TheanalyticalmachinewasmadebyCharlesBabbage.1936Thecomputerbeganasacalculatingmachine．Thecomputergrewrapidlybothinsizeandinbrainpower.Careful-reading:Readthetextcarefullyandfillinthetables.1940sThefirstfamilyofcomputerswasconnectedtoeachother.1970snowComputershadgrownaslargeasaroom.1960sComputerswereusedinofficesandhomes.Computersconnectpeopleallovertheworldtogether.DevelopmentEarlydaysNameFunctionPoorStrongA_________machineSimplifydifficultsumsAn________machineThinklogicallyandproduceananswerquicklyA_________machineSolvedifficult______________________calculatinganalyticaluniversalmathematicalproblemsDevelopmentNetworktimes_________storedinTubesLargeSmall____________Smallchips________________NarrowWideFinance________RobotsMobilephones___________SpacerocketsMedicaloperationsMemoryTransistorsApplicationsCommunicationTradeParagraph1Paragraph2Paragraph3TopicsentenceSupportingdetailsOvertimeIhavebeenchangedquitealot.•Calculatingmachine•Analyticalmachine•Universalmachine•PC•laptopThesechangesonlybecamepossibleasmymemoryimproved•Tubes•Transistors•Chips•Network•WorldwidewebSincethe1970smanynewapplicationshavebeenfoundforme.•Communications•Finance•Trade•Robots•Mobilephones•Medicaloperations•Spacerockets•Providingalifeofhighquality1.In1642Ibeganasacalculatingmachineandcouldsolveanymathematicalproblem.2.MyrealfatherwasCharlesBabbage,whowroteabookandbuildmein1936.3.AfterIgotmynewtransistorsinthe1960s,Ibecamesmallerbutclevererandquicker.4.Iwasbroughtintopeople’shomesinthe1970s.5.SincemybirthIhavebeenbuilttotaketheplaceofhumanrace.FFTTFReadthetextagainandcheckifitistrueorfalse.DiscussionIsitveryimportanttolearncomputerskillsforus?Whyorwhynot?Usethefollowingexpressioninyourdiscussion.Ithinkthat……Inmyopinion…Ibelievethat…What’syourreason?Whydoyouthinkso?HomeworkRetellthetextaccordingtothefollowingclueswegiven.Changesofthemachine.CalculatingmachineAnalyticalmachineUniversalmachineMachinewithartificialintelligenceMachinewithnewtransistorAfamilyconnectedbyanetworkAfamilyusedbytheInternetPeriod2ThehistoryofcomputersRevision:thesecondgeneration(1956-1963)thethirdgeneration(1964-1971)thefourthgeneration(1971-)Thefirstgeneration(1945-1956)1.___________2.___________3.___________4.___________5.___________6.___________7.___________8.___________9.___________10.__________completechangeinwaysofthinking,working,etc.connectedcomputersystemtomakethingseasiertofindtheanswerusingnumberscanbemovedeasilyfromplacetoplacetoworkouttheanswertoaproblemtotravelaroundanareatofindoutaboutitcompletelyanywayactivityofmanagingmoneyfinanceanyhowtotallyexploresolvemobilecalculatesimplifyrevolutionnetworkFindthewordorexpressionsfroeachofthefollowingmeaningsfromthetext.Completethepassagewiththewordsbelow.Mybrotherwasveryinterestedincomputersandenjoyedwritingprogramsofhisown.HeusedtodownloadinformationfromtheInternetandmadegooduseofit.Helikedto________theWorldWide_______andusedtheInternettocommunicatewithcomputerprogrammersallovertheworld.Whenhewenttouniversity,hestudiedIT(information____________)anddevelopedaspecialinterestin__________intelligence.Afterdevelopingspecial___________ofthecomputer,hehopestodesignan__________robotwhichcanthink_________andlooklikeahumanbeing,butin_______hehasalongwaytogo.exploreWebtechnologyartificialapplicationsintelligentlogicallyrealityWordPuzzleAnabacusItisbuilttosolvesomemathematicalpro