1、The Internet and World Wide WebWhat are some services found on the Internet?DiscussionThe Internet The Internet is a worldwide group of networks that links millions of business,government agencies,schools,and individuals.The World Wide WebE-mail How did the Internet originate?History of the Internet
2、Become functional:in September 1969Goal:To allow scientists in different places to share informationArpanet:Networking project by Pentagons ARPANextHistory of the InternetTodayMore than 350million host nodes1969Four host nodes1984More than 1,000 host nodes Who controls the Internet?lNo oneit is a pu
3、blic,cooperative,and independent network.lSeveral organizations set standardsHistory of the InternetSlow-speed technologyDial-up accessmodem in your computer uses a standard telephone line to connect to the InternetConnection must be established each time you log on.How the Internet worksHigh-speed
4、connectionConnection is always on whenever the computer is running.DSL,cable modem,fixed wireless,Wi-Fi,and satellite modems What are ways to access the Internet?1.ISP,Regional or National2.OSP(AOL and MSN,for example)3.Wireless Internet Service ProviderHow the Internet worksThe World Wide WebA worl
5、dwide collection of electronic documentsEach electronic document is called a Web pageCan contain text,graphics,audio,video,and built-in connectionsA Web site is a collection of related Web pages What is a Web browser?FirefoxProgram that allows you to view Web pagesOperaSafariThe World Wide WebMicros
6、oftInternetExplorerNetscape What is multimedia?Application combining text with other media elementsl Graphicsl Animationl Audiol Videol Virtual realityl Plug-InsThe World Wide Web What graphics formats are used on the Web?The World Wide WebBMPGIFTIFFJPEGPNG What is animation?Appearance of motion cre
7、ated bydisplaying a series of still imagesin sequenceThe World Wide WebOther Internet Services What is E-mail?l Short for electronic maill The transmission of messages and files via a computer networkl One of the original services on the Internet What is instant messaging(IM)?lA real-time Internet c
8、ommunications service that notifies you when one or more people are online and allows you to exchange messages or filesOther Internet Services What is a chat?lReal-time typed conversation that takes place on a computerlChat room is location on server that permits users to discuss topics of interestOther Internet ServicesWeb Publishing Plan a Web site Think through and design a Web site Create a Web site Put up a Web site Maintain a Web site SummaryLearn how to access the InternetUnderstand how the Internet worksSearch for information on the InternetDescribe the types of Web sitesThank you
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