高一必修2 Unit 3 Computers 课件-Reading.ppt

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1、Unit3ComputersWarmingupandreading1Guess!Atoy?Ahandbag?ComputersIamveryoldnow.IwasborninChina.Manypeopleusedmeforcalculatinginthepast,butnowIamabitlonelybecausetheydon’tlikemenow.DoyouknowwhoIam?abacusGuessmore:Iamverysmall.Icanbeusedforcalculating.InChina,al

2、otofstudentsusemewhensolvingmathematicalproblems.DoyouknowwhoIam?calculatorIcanbeusedforcalculating.Besides,IcanalsobeusedforwatchingDVD,sendinge-mailandcommunicatingthroughtheInternet.However,IamnotaPC,becauseI’msmallenoughforyoutotakemewithyou.notebookcomp

3、uterDoyouknowwhoIam?abacuscalculatorAhugecomputerPDAlaptopAPCAhugecomputerAPCPDAlaptopabacuscalculatorAnabacusAhugecomputerAcalculatorAPCAnotebookcomputerSth.incommondifferencessizeusespeedinventionhelpworkwithnumbersHowhavecomputerchangedourlives?(Whatcanyo

4、udousingcomputers?)Pre-readingWecanusethecomputerorInternetto:playcomputergameslistentomusicwatchmoviescommunicatewithmyfriends(MSN,QQ)searchusefulinformation(Google,Yahoo!)buythingsIlike(eBay,Taobao)typemyhomeworkdrawpicturesReadingWhoAmI?Readingforgenerali

5、deaTask1WhoamI?Iamacomputer.Whatdoeseachparagraphtellus?Para.1:Para.2:Para.3:Ittellsusthatthecomputerhasbeenchangedmuchovertime.Ittellsusthatthesechangesonlybecamepossibleasthememoryofthecomputerimproved.Ittellsusthatmanynewapplicationshavebeenfoundforthecom

6、putersincethe1970s.Task2Readingfordetails●Whatwasthecomputercalledindifferentstages?1.Itbeganasa(n)_________________inFrancein1642.2.About200yearslateritwasbuiltasa(n)__________________byCharlesBabbage.3.In1936itwasmadetoworkasa(n)_________________.4.Laterit

7、wasbuiltasa___________________.5.Asa__________,ithasbeenusedinofficesandhomessincethe1970s.calculatingmachineanalyticalmachineuniversalmachinePC(personalcomputer)laptop●Whatarethethingsthatmadethecomputer’smemoryimproved?_____________________________________

8、___________________________________________tubestransistorsWorldWideWebchipsnetwork●Whatnewapplicationshavewefoundforthecomputersincethe1970s?communicationfinancetraderobotsmobilephonesmedicalop