计算机专业英语第二单元详解.pptVIP

Chapter 2 The Internet, The Web, and Electronic Commerce Competencies (1 of 2) Discuss the origins of the Internet and the Web Describe how to access the Web using providers and browsers Discuss Internet communications, including e-mail, instant messaging, and social networking Competencies (2 of 2) Describe search tools, including search engines and metasearch engines Discuss electronic commerce, including B2C, C2C, B2B, and security Describe Web utilities: Web-based applications, FTP, plug-ins, and filters Introduction The Internet is often referred to as the Information Superhighway because it connects millions of people across the globe. Unlike a typical highway, the Internet moves idea and information. The Web provides an easy-to-use, intuitive interface to connect to the Internet and is used by millions of people every day. The Internet and the Web Large network that connects smaller networks globally The Internet was Launched in 1969 National computer network US funded project called ARPANET World Wide Web or WWW was introducedin 1992 at CERN Common Internet Uses Communicating Exchange e-mail Discussion Groups Online shopping Searching Virtual Libraries Entertainment Education or e-learning Internet Access Providers Common way to access the Internet Commercial Internet Service Providers (ISP) National Service Providers Regional Service Provider Wireless serviceproviders Browsers Programs that provide access to Web resources Allow you to surf the Internet Three well-known browsers Mozilla Firefox Netscape Communications Microsoft Internet Explorer Address or location of the resource must be specified URL URLs Uniform Resource Locators All URLs have at least two parts Protocol Domain name Locates Web sites More on Browsers Browsers interpret HTML commands Hypertext Markup Language Contained in a document Display document as a Web page Communication Most popular Internet activity Types of communication Electronic Mail (E-Mail) E-Mail Address Spa