湖南软件职业学院专业英语论文

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1、5湖南软件职业学院专业英语（论文）湖南软件职业学院专业英语论文HunansoftwarevocationalcollegeprofessionalEnglishpapers专业名称：电子工程技术指导老师：林娟毕业生姓名：李小林毕业生学号：20081070220论文提交日期：2010年12月THEINTERNETAbstractWhatistheInternet?Wherediditcomefrom,andhowdiditsupportthegrowthoftheWorldWideWeb?WhataretheInternet’15湖南软件职业学院专业英语（论文）smostimp

2、ortantoperatingprinciples?TheInternetisaninterconnectednetworkofthousandsofnetworksandmillionsofcomputers(sometimescalledhostcomputersorjusthosts)linkingbusinesses,educationalinstitutions,governmentagencies,andindividualstogether.TheInternetprovidesaround400millionpeoplearoundtheworld(andov

3、er170millionpeopleintheUnitedStates)withservicessuchase-mail,newsgroups,shopping,research,instantmessaging,music,videos,andnews.NooneorganizationcontrolstheInternetorhowitfunctions,norisitownedbyanybody,yetithasprovidedtheinfrastructureforatransformationincommerce,scientificresearch,andcult

4、ure.Wordkey:InternetoperatingprinciplesTEXTThewordInternetisderivedfromthewordinternetworkortheconnectingtogetheroftwoormorecomputernetworks.TheWorldWideWeb,orWebforshort,isoneoftheInternet’smostpopularservices,providingaccesstooveronebillionWebpages,whicharedocumentscreatedinaprogrammingl

5、anguagecalledHTMLandwhichcancontaintext,graphics,audio,video,andother15湖南软件职业学院专业英语（论文）objects,aswellas“hyperlinks”thatpermitausertojumpeasilyfromonepagetoanother.InternetI—today’sInternet—hasevolvedoverthelastfortyyears.Inthissense,theInternetisnot“new”;itdidnothappenyesterday.Althoughjour

6、nalistsandpunditstalkgliblyabout“Internet”time—suggestingafast-paced,nearlyinstant,worldwideglobalchangemechanism,infact,ithastakenfortyyearsofhardworktoarriveattoday’sInternet.ThehistoryoftheInternetcanbesegmentedintothreephases.Inthefirstphase,theInnovationPhase,from1961to1974,thefundamen

7、talbuildingblocksoftheInternetwereconceptualizedandthenrealizedinactualhardwareandsoftware.Thebasicbuildingblocksare:packet-switchinghardware,client/servercomputing,andacommunicationsprotocolcalledTCP/IP(alldescribedmorefullybelow).Theoriginalpurposeofth