欢迎来到天天文库
浏览记录
ID:56395577
大小:3.06 MB
页数:25页
时间:2020-06-16
《英语必修二第三单元课文.ppt》由会员上传分享,免费在线阅读,更多相关内容在PPT专区-天天文库。
1、Unit3ComputersReadingSendorreceiveemails……COMPUTERUnit3Computerskeyboardmousemonitorscreenspeakerhostcomputercamera1234567WhatisitinEnglish?CPU(centralprocessingUnit)中央处理器WhatisitinEnglish?Mainboard(主板)WhatisitinEnglish?harddisc硬盘WhatisitinEnglish?displayca
2、rd显卡DVDROMDigitalVersatileDiscReadOnlyMemory数字通用光盘WhatisitinEnglish?Thefirstcomputer?ThefirstcalculatingmachinewasinventedbyPascalinFrancein1642.Intheearly1960s,peoplecouldcommunicatewitheachotherthroughWorldWideWeb.WhoamI?Reading:Ibeganasacalculatingmachin
3、einFrancein1642.AlthoughIwasyoungIcouldsimplifydifficultsums.IdevelopedveryslowlyandittooknearlytwohundredyearsbeforeIwasbuiltasananalyticalmachinebyCharlesBabbage.AfterIwasprogrammedbyanoperatorwhousedcardswithholes,Icould"think"logicallyandproduceananswer
4、quickerthananyperson.Atthattimeitwasconsideredatechnologicalrevolutionandthestartofmy"artificialintelligence".In1936myrealfather,AlanTuring,wroteabookabouthowIcouldbemadetoworkasa"universalmachine"tosolveanydifficultmathematicalproblem.Fromthenon,Igrewrapid
5、lybothinsizeandinbrainpower.Bythe1940sIhadgrownaslargeasaroom,andIwonderedifIwouldgrowanylarger.However,thisrealityalsoworriedmydesigners.Astimewentby,Iwasmadesmaller.FirstasaPC(personalcomputer)andthenasalaptop,Ihavebeenusedinofficesandhomessincethe1970s.O
6、vertimeIhavebeenchangedquitealot.Firstitwasstoredintubes,thenontransistorsandlateronverysmallchips.AsaresultItotallychangedmyshape.AsIhavegrownolderIhavealsogrownsmaller.Overtimemymemoryhasdevelopedsomuchthat,likeanelephant,IneverforgetanythingIhavebeentold
7、!AndmymemorybecamesolargethatevenIcouldn'tbelieveit!ButIwasalwayssolonelystandingtherebymyself,untilintheearly1960stheygavemeafamilyconnectedbyanetwork.IwasabletosharemyknowledgewithothersthroughtheWorldWideWeb.Thesechangesonlybecamepossibleasmymemoryimprov
8、ed.Ihavebecomeveryimportantincommunication,financeandtrade.Ihavealsobeenputintorobotsandusedtomakemobilephonesaswellashelpwithmedicaloperations.IhaveevenbeenputintospacerocketsandsenttoexploretheMoonan
此文档下载收益归作者所有