电子商务概论_PPT_ch02.pptx

Chapter 2Technology Infrastructure: The Internet and the World Wide Web? Cengage Learning 2015Learning Objectives? Cengage Learning 2015In this chapter, you will learn:About the origin, growth, and current structure of the InternetHow packet-switched networks are combined to form the InternetHow Internet, e-mail, and Web protocols workAbout Internet addressing and how Web domain names are constructedLearning Objectives (cont’d.)? Cengage Learning 2015About the history and use of markup languages on the WebHow HTML tags and links workAbout technologies people and businesses use to connect to the InternetAbout Internet2 and the Semantic WebIntroduction? Cengage Learning 2015A growing number of Internet users are using smartphone or tabletSmartphones are typically only the access method in developing countriesHistory of Internet-capable mobile phonesFirst introduced in late-1990sSlow, unreliable service, no keyboards2001: Treo, Blackberry introduced2009: All major phone manufacturers had products2011-2013: Lower price phones targeted developing marketsThe Internet and the World Wide Web? Cengage Learning 2015Computer networkTechnology allowing people to connect computersInternet (capital “I)Interconnected global computer networksinternet (small “i”)Group of interconnected computer networksBasic technology structureSupports networks, the Internet, and e-commerceThe Internet and the World Wide Web (cont’d.)? Cengage Learning 2015World Wide Web (Web)Subset of Internet computers Includes easy-to-use interfacesOrigins of the Internet? Cengage Learning 2015Early 1960sDefense Department nuclear attack concernsPowerful computers (large mainframes)Leased telephone company linesSingle connectionSingle connection risk solutionCommunicate using multiple channels (packets)1969 Advanced Research Projects Agency (ARPA)Packet network connected four computersARPANET: earliest network (became the Internet)Academic research use (1970s and 1980s)New Uses for the Internet? Cengage Learning