THE INTERNET, THE WEB, AND ELECTRONIC COMMERCE 2 CHAPTER THE INTERNET, THE WEB, AND ELECTRONIC COMMERCE Ask the students why the Internet is often referred to as the Information Superhighway Competent end users need to be aware of the resources available on the Internet and the Web Ask students to list the resources they use on the Web

Competencies Discuss the origins of the Internet and the Web Describe how to access the Web Discuss Internet communications Describe Internet search tools Discuss electronic commerce Discuss Web utilities Page 28

The Internet and the Web Large network that connects smaller networks globally Launched in 1969 National computer network US funded project called ARPANET World Wide Web introduced in 1992 at CERN Most developed network system currently in use; connects people all over the world Originally started in 1969 when US funded a research project (ARPANET— Advanced Research Project Agency Network) CERN – Center for European Nuclear Research World Wide Web (Web) is a part of the Internet – not the Internet; introduced in 1992 by consortium in Switzerland. Originally started as research and text-based network to exchange research ideas from university to university Developed into a network of networks One of the most powerful tools of the 21st century Page 30

Common Internet Uses Communicating Shopping Searching Entertainment Exchange e-mail Discussion Groups Shopping Searching Entertainment Education or e-learning Most common Internet applications Communicating - sending e-mail and discussion group participation You can chat live with others Ask students what chat software they use Shopping – fastest-growing applications Searching - using virtual libraries Entertainment – music downloads; integration of TV and PC Education or e-learning You can take classes on almost any subject Page 30

Access Providers Common way to access the Internet Commercial Internet Service Providers (ISP) National Regional Wireless service providers The common way to access the Internet is through a provider or host computer Providers - already connected to the Internet -- furnish a pathway for other users Typical providers include: Colleges and universities – usually “free” Internet service providers (ISP) can be local (regional) or national Ask students to identify various ISPs used in their environment Types of providers National – like AOL Regional – smaller service area Wireless No telephone lines used Provide connection through wireless modems Page 31

Browser Basics Programs that provide access to Web resources Allow you to surf the Internet Two well-known browsers Netscape Navigator Microsoft Internet Explorer Address or location of the resource must be specified URL Browsers allow you to search or surf the Web Navigate, search for information and communicate using the Web Use URL (uniform resource locator) to connect to other resources Two parts to URL: protocol, rules for exchanging data between computers (usually http://); second is domain name or server where resource is located (www.cnn.com) Page 32

URLs Uniform Resource Locator Locates Web sites All URLs have at least two parts Protocol Domain name Locates Web sites Browser is software that allows users to navigate the Web and read the multimedia formatted pages Connect to Web sites using URL addresses (uniform resource locator) Document is sent to computer usually coded in HTML (Hypertext Markup Language) or some variation Interprets the HTML codes displaying page May contain Hyperlinks -- allow users to quickly connect to other pages or Web sites Graphics Text Page 33

More on Browsers Browsers interpret HTML commands Hypertext Markup Language Contained in a document Display document as a Web page Web pages contain links to programs called applets These are special programs written in a programming language called Java These programs can be quickly downloaded and run by most browsers Page 33

Communication Most popular Internet activity Types of communication E-Mail E-Mail Address Discussion Groups Communications is the most popular Internet activity Types of communications: E-mail or electronic mail Transmission of electronic messages over the Internet Has three basic parts: header, message, and signature Header Address Subject – very important to include this in a message Attachments Spam – unsolicited e-mail Distraction, Nuisance Discussion groups Participate in forums and debates Includes mailing lists, newsgroups, chat groups, and instant messaging Mailing lists – message is sent to a list of addresses Newsgroups – uses a special network called UseNet Chat - allows direct, live communications IRC – Internet Relay Chat is a very popular chat service IM – instant messaging, can send messages back and forth in real time Lurking - this is a technique you can use before you participate in a discussion group You observe and don't respond until you feel more comfortable with the group Page 34

Discussion Group Terms Someone who has comprehensive knowledge about a subject Wizard A sequence of ongoing messages on the same subject Thread Someone who aids new users by answering questions Saint Request for discussion RFD Reading news but not joining in to contribute Lurking Insulting, putting down, or attacking Flaming Description Term Ask students to give examples of the each of the above discussion group terms Page 37

Search Tools Search engines Metasearch engines Specialized search engines Specialized programs that assist you in locating information on the Web and the Internet Search services ( providers) help you locate information; they maintain the database that helps you get where you want Special programs called agents, spiders, or bots, continually look for information and updated services Search engines – assist you to locate information Examples Alta Vista Excite Google Teoma Yahoo! Use keyword search; know “rules” i.e. use + or quotes to look for phrases rather than individual words Use directory search – list of categories or topics; also known as index search Metasearch engines – programs that automatically submit your search request to several search engines simultaneously Page 40

Electronic Commerce Also known as e-commerce Buying and selling of goods over the Internet Business-to-consumer (B2C) Consumer-to-consumer (C2C) Business-to-business (B2B) Electronic commerce is buying and selling over the Internet Three basic types of electronic commerce: business to consumer; consumer to consumer; and business to business Web storefronts are virtual stores for B2C commerce; just like being in the store except you do it from home Web auctions growing in popularity; similar to traditional auctions – no one sees each other Auction house sites – merchandise presented for auction Person-person auction sites – more like flea markets; forum for buyers and sellers to gather Electronic payment -- easy, secure payment method Checks -- slowest and least convenient Credit cards -- easier to work with, somewhat vulnerable to theft Electronic cash or e-cash -- also known as cybercash and digital cash Purchased from third party (usually a special bank); more secure than credit cards Page 42

Web Storefronts Virtual stores Web storefront creation packages Also called commerce servers Help businesses create virtual stores Allow visitors to register, browse, and make purchase Virtual stores for B2C electronic commerce Shoppers visit stores on the Web to inspect merchandise and make purchases Page 43

Web Auctions Consumer-to-consumer e-commerce (C2C) Similar to traditional auctions Types Auction house sites Person-to-person auction sites Similar to Web traditional auctions Buyers and sellers seldom meet face-to-face Ask the students if they have ever used E-bay Page 43

Security Payment methods must be fast, reliable, and secure Three basic options Checks Credit card Electronic cash E-cash Cybercash Digital cash A challenge is the payment for goods Should be reliable, secure, and fast Page 44

Web Utilities Telnet FTP Plug-ins Filters Plug-in Source Acrobat Reader www.adobe.com Media Player www.microsoft.com QuickTime www.apple.com RealPlayer www.real.com Shockwave www.macromedia.com Telnet runs programs on remote computers; connect to another computer and run programs on it FTP transfers files; file transfer protocol; Internet service for file transfer Downloading - transmitting files to your computer Uploading - transmitting files from your computer to another computer Plug-ins -- automatically loaded by and work with your browser; Acrobat Reader; Cosmos from Silicon Graphics (3-d displays); Media Player; QuickTime from Apple; RealPlayer; and Shockwave from Macromedia Helper applications are independent programs executed from your browser designed to maximize your efficiency Off-line browsers – Off-line search utilities – auto submit your search information to variety of engines and create an index for your review; auto save HTML documents to your hard drive Information pushers – User selects topic areas or channels of interest Program retrieves relevant information from the Web and stores it for viewing at the convenience of the user Filters – block access to specified sites; set time limits Page 45

A Look to the Future Internet2 A high bandwidth project for media-intensive files Collaboration of universities, the government, and private industry 100 times faster than the Internet Not a separate Internet Internet2 is a collaborative project between an assembly of universities, the government, and private resource groups Faster downloads and less waiting time are some of the advantages Page 47

Discussion Questions (Page 1 of 2) Discuss the uses of the Internet. Which activities have you participated in? Which one do you think is the most popular? Explain the differences between the three types of providers. What are the basic elements of an e-mail message? Have students turn to the end of Chapter 2 in their textbooks to view the same “Open-Ended” questions/statements Page 54

Discussion Questions (Page 2 of 2) What are the types of discussion groups? Describe any groups you participate in. Describe the different types of search engines. Give an example of the type of search each engine is best for. Have students turn to the end of Chapter 2 in their textbooks to view the same “Open-Ended” questions/statements Page 54