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1、Ch 8 - The Internet, The Web, And Electronic CommerceI. Ch 8 The Internet, The Web, And Electronic CommerceLecture OutlineA. Competencies pg 281. Discuss the origins of the Internet and Web.2. Describe how to access the Web using providers and browsers.3. Discuss Internet communications including e-
2、mail, instant messaging, and discussion groups.4. Describe search tools including search engines, metasearch engines, and specialized search engines.5. Discuss electronic commerce including B2B, B2C, C2C, and security.6. Describe Web utilities: Telnet, FTP, plug-ins, and filters.B. Introduction pg 2
3、9 Why use the Internet? Communicate with people across town, state, or country. Send drawings, photos, or letters. Research term papers, explore career paths. The Information Superhighway Internet moves ideas and information Move through cyberspace rather than geographic space Internet and Web terms
4、 Browsers connect to Web sites and display Web pages Web Sites include all types of multimedia Search Engines assist in locating web resources E-Commerce buying and selling goods over the Internet Web Utilities make using the Web easierC. The Internet and the Web pg 30 The Internet launched by ARPAN
5、ET is a worldwide network The Internet is a worldwide network. The Internet started in 1969 when the United States government funded a major research project on computer networking called ARPANET (Advanced Research Project Agency Network). The Internet is the actual physical network. It is made up o
6、f wires, cables, and satellites. It connects over 65 million computers and resources throughout the world. What is the Web? The Web provides a multimedia interface to resources available over the Internet. Everyday a billion users from every country in the world use the Internet and the Web. It is a
7、lso known as WWW or World Wide Web. The Web was first introduced in 1992 at CERN (Center for European Nuclear Research) in Switzerland. Prior to the Web, the Internet was all text with no graphics, animations, sound, or video. What are the most common Internet applications? Communicating Communicati
8、ng on the Internet includes e-mail, discussion groups (newsgroups), and chat groups. You can use e-mail to send or receive messages to people around the world. You can join discussion groups or chat groups on various topics. You can create your own personal web page. Shopping Shopping on the Interne
9、t is called electronic commerce. You can window-shop at cybermalls. You can purchase goods using checks, credit cards, or electronic cash called electronic payment. Searching You can do research on the Internet by visiting virtual libraries and browse through stacks of books. You can read selected i
10、tems at the virtual libraries and even check out books. You can find the latest local, national, and international news. Many newspapers maintain an online presence. Entertainment Find music, movies, magazines, and computer games. Find live concerts, movie previews, book clubs, and interactive live
11、games. Education or e-learning Education is a rapidly emerging Web application. Classes can be taken for high school, college, and graduate school credit. Courses are available about a wide variety of subjects and are available for a cost or for freeD. Access pg 31 How do you get connected to the In
12、ternet? You get connected to the Internet through a computer. Once connected, your computer becomes an extension of what seems like one giant computer. Use a browser program to access web resources.1. Providers Using a provider or host computer is the most common way to access the Internet. A provid
13、er is already connected to the Internet. Its possible to find free providers to the Internet, such as your college or university. Commercial Internet Service Providers are called ISPs ISPs use a variety of connection technologies including dial-up, Digital Subscriber Line (DSL), cable, and wireless
14、modems This creates a client/server network: the users computer is the client, the ISPs computer is the servera) National service providers Example is America On Line (AOL) Access the Internet from almost anywhere in the United States without incurring long distance chargesb) Regional service provid
15、ers Also use telephones, but youll incur long distance charges if you leave the regionc) Wireless service providers Dont use standard telephone connections. Do use wireless modems and/or other wireless devices2. Browsers Browsers are programs that provide access to Web resources Browser software lets you: Connect to remote computers Open and transfer files Display text and images Provides in one tool an uncomplicated interface to the Internet and Web documents. Allow you to surf the Web, easily moving from one site to another Uniform R
