资源描述：
《英语介绍电脑发展史教学内容.ppt》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。
1、DevelopmentofcomputerhistoryInthelastmiddlecentury,toomanyscientistsdevotedtheirlifejustwanttoinventedamachinewhichcanhelppeoplecalculatecomplexdata.Ofcourse,theygetveryhighlyachievement,sotodayIjusthaveseveralimportantsymbolicprogresstoshow.Thefirstgenerationoftubecomputer(1945-1956)InFe
2、bruary15,1946,markingthebirthofthemoderncomputerENIACisinventedinthePhiladelphia(费城).TheENIACrepresentsthehistoryofthecomputermilepost(里程碑).ItisdevelopedbytheUnitedstatesgovernmentandtheuniversityofPennsylvania,used18000vacuumtubes(真空管),70000resistors(电阻器),5millionweldingpoint(焊接点),andthe
3、powerconsumptionabout160kilowatts.Theoperationspeedisabout5000timesasecond.itisveryquickatthatage.ENIACThesecondgenerationoftransistor(晶体管)computerTheinventionofthetransistorin1948,insteadofthehugeelectrontubestobeusedinelectronicequipment.In1956,transistorwasusedincomputerledtotheproduct
4、ionofthesecondgenerationcomputer.Thesecondgenerationcomputerhastheadvantagesofsmallvolume,highspeed,lowpowerconsumption,stablefunction.Thefirsttransistor.Thethirdgenerationofintegratedcircuits(集成电路IC)computerIn1958Texas(德州)engineerJackKilbyinventedtheIC,madethreeelectroniccomponent(原件)int
5、oatinysilicon(硅).Itisaleapinthehistoryofcomputerdevelopment.Thecomputerbecomessmaller,lowerpowerconsumption,faster.Andmadepossibleintheinventionofpersonalcomputers.JackkilbyWesleyA．ClarkandtheLINC(1964)(thefirstpersonalcomputerintheworld)Thefourthgenerationoflargescaleintegratedcircuitcom
6、puters(LSI)(1972-present)LSIcanaccommodatehundredscomponents.In1980s,ultralargescaleintegration(超大集成电路ULSI)canaccommodatethehundredsofthousandsofcomponents,evenincreasethenumbertomillions.Itmadecomputer’ssizeandpriceslowerbutthefunctionbetter.In1981,IBMintroducedthepersonalcomputer(PC)for
7、home,officeandschool.TheULSIThePCThesmallestCMOSchip(芯片)intheworld.Itis0.4mmlevel.Maybecomputer’sinventionisforthewar,butwiththedevelopmentofsociety.Ibelievethatthepurposeofcomputer-generatedistomakepeopletocreatemorematerialwealth,andmakethepotentialofpeopleevengre
