18 is a component of Re alOne Player. such as the Internet. Anyone with access to a computer, an Internet connection, and a way to VIDEo Video is full-motion images that are pay for products or services can take part in e- played back at various speeds. Most video also commerce. has audio together with it. Like audio, many E-commerce has changed how people do Web sites have video to help your business. It almost completely removes the understanding or for entertainment. Rather difficulties of time and distance that make than turning on the television, you can watch traditional business slow. Now, with e-commerce your favorite programs, either live or pre- business happens instantly and globally. This recorded,or watch your favorite singer, all on saves time for people on both ends the computer Some popular uses of e-commerce by Like audio, simple video applications on the consumers are shopping, investing, and Web are made up of individual video files, such banking. Users can buy nearly any product or as movie or television clips. You must download service on the Web. Some examples include these files completely before you can play them flowers, books, computers, music, movies, cars, on the computer. video files often are airline tickets, and concert tickets compressed because they are quite large in size These clips also are quite short in length, usually less than 10 minutes, because they can take a OTHER INTERNET SERVICES long time to downlo.d The Moving Pictures Experts Group(MPEG)defines a popular video The World Wide Web is only one of the many compression standard. The one that is being services on the Internet. Other Internet service used now is called MPEG-4 are eIn ail, FTP, newsgroups and message Like streaming audio, streaming video lets you boards, mailing lists, chat rooms, and instant view longer or live video images while they messaging. The following Pages discuss each of download to your computer. AVI (Audio Video these services Interleaved ), QuickTime, windows Media Format, and Real video are widely used E-Mail standards that are supported by most Web E-mail (short for electronic mail) is the browsers for transmitting streaming video data transmission of messages and files by using a on the Internet comput ter network." You use an e-mail program to create, send VIRTUAL REALITY. Virtual reality (VR)is receive, forward, store, print, and delete e-mail the use of computers to simulate a real or messages, Microsoft Outlook and Outlook imagined environment that appears as a three. Express are two popular e-mail programs. The dimensional (3-D)space. On the Web, VR message can be simple text or can have an involves the display of 3-D images that users attachment such as a word processing explore and control interactively document, a graphic, an audio clip, or a video y using special VR software, a Web developer clip creates an entire 3-D Web site with unlimited In the same way as you address a letter when space and depth, called a VR world. A VR using the postal system, you must address an e- world, for example, might show a room with mail message with the e-mail address of the furniture. Users walk through such a VR room erson who should receive it. To receive by moving an input device forward, backward messages, you need to have an e-mail address. or to the side In the same way, when someone sends you a Games often use VR. Many practical uses of message, they must have your e-mail address VR also exist. Science educators create VR An e-mail address is a user name and a domain models for students to examine Companies use name together to identify a user so he or she can VR to show products or create advertisement receive Internet e-mail Builders create VR models of buildings and Some Web sites provide free e-mail services construction project will look before it is built. connect to the Web site and set up nema v rooms so clients can see how a completed To use these Web-based e-mail programs, y account, which usually has an e-mail address E-Commerce s and a password E-commerce short for eleetronic commerce, is In an Internet e-mail address, an business that happens on an electronic network (pronounced"at")symbol sep rates the user
9 name from the domain name. Your e-mail files to and from other computers on the service provider gives the domain name. Most e- Internet. Uploading is the opposite of mail programs let you create an address book downloading: that is, uploading is the process which has a list of names and e-mail addresses of transferring documents, graphics, and other objects from your computer to a server on the Chat Rooms Internet A chat is a real-time typed conversation that An FTP server is a computer that lets users appens on a computer Real time means that upload and download files using FTP An FT you and the people with whom you are talking site is a collection of files such as text, graphics, are online at the same time a chat room is a audio clips, video clips, and program files that place on an Internet server that lets users chat are kept on an FTP server. Many FTP sites have with each other. Anyone in the chat room can anonymous FTP, by which anyone can transfer take part in the conversation, which usually is some, if not all, available files. Some FTPsites about a certain topic. allow only those who have authorized accounts When you type on your keyboard, the words (user names and passwords)on the FTPserver and symbols are shown on the computer screen to transfer files Others who are connected to the same chat room server also see what you have typed Newsgroups and Message Boards Some chat rooms have voice chats and video A newsgroup is an online place in which users chats, in which people hear or see each other have written discussions about a certain subject while they chat To take part in a discussion, a user sends a To start a chat session, you connect to a chat message to the newsgroup, and other users in server through a chat client. A chat client is a the newsgroup read and reply to the message program on your computer. Today s browsers Some major topic areas include news, hobbies, usually have a chat client. If your browser does society, business, science, and computers not, you can download a chat client from the web A computer that stores and sends out After you have installed a chat client, you can newsgroup messages is called a news server create or join a conversation on the chat server Many universities, companies, Internet access to which you are connected. The chat room providers, and other large groups have a news The person who creates a chat room is the"y should tell you which topic is being discus server. Some newsgroups ask you to enter a user name and password to take part in the operator and is responsible for watching the discussion, Only authorized members can use conversation closely and disconnecting anyone this kind of newsgroup. For example, a who causes problems newsgroup for students taking a college class may ask for a user name and password to access the newsgroup. This makes sure that only Instant Messaging students in the class take part in the discussion Instant messaging(IM)is a real-time Internet communications service that lets you know when To take part in a newsgroup, you usually use a one or more people are online and then lets you program called a newsreader. A newsreader lets exchange messages or files with them were entered before, called articles. You can post For IM to work, both people must be online at or add, your own articles the same time, and the receiver of a message Newsgroup members often post articles to must be willing to accept messages. reply to another article-either to answer a To use IM, you may need to install instant question or to talk about material in the first messenger software onto your computer article. The author of the original article, or other users, may then post more articles that are FTP related to the first article FTP(File Transfer Protocol) is an Internet A popular Web-based kind of discussion standard that lets you upload and download group that does not need a newsreader is a
D Message Boads fAny advice on condos? 0451pm e) 2 c( n H e s t- ce ca M a t h he otte lad be l wwn wh 2 bea oo lo teda l gd w ieieadws 的加M3c 二 U Message Boards a ItavlesarAw Cayman islan shetpe cap an Mac Mteeedasom masaru FIGURE 2-4 On this message board. users discuss travel destinations message board (Figure 2-4). Many Web sites use opinions and ideas with others easily and message boards rather than newsgroups because inexpensively only through the media they are easier to use classroom, work, or social environments Creating an advertisement or publication for Mailing Lists large number of people was very expensive 9 A mailing list is a group of e-mail names and Today, businesses and individuals communicate addresses that is given a single name. when a nformation to millions of people by creating message is sent to a mailing list, every person on their own Web pages. the list receives a copy of the message in his or Web publishing means developing and address to a mailing list, you subscribe to it. To page, you do not have to be a compuler a Web her mailbox. To add your e-mail name and keeping up with Web pages To develop remove your name, you unsubscribe from the programmer For the small business or home mailing list. user, Web publishing is quite easy if you have There are thousands of mailing lists on the correct tools variety of topics, such as entertainment The five main steps to Web publishing are as business, computers, society, culture, health follows: hobbies, and education. To find a malling list for 1. Plan a Web site a certain topic, you can search for the keywords 2. Think through and design a Web site 3. Create a Web site n a search engine 4. Put up a Web site 5. Maintain a Web site WEB PUBLISHING The following paragraphs describe these steps in more detail Before the World Wide Web, people could share
Plan a Web Site search engines let you register your Web address Part of planning a personal Web site is and keywords for free thinking about topics related to the design of the Web site, Be clear about the purpose of the Web Maintain a Web Site site and the kind of people whom you want to A successful Web sites contents must be up to visit the Web site. Find ways to make your Web date and its links must work correctly at all site different from similar ones times. Make sure your Web site is up to date and still suitable by reviewing and making Think Through and Design a Web Site necessary changes often A Web site can be simple or complex. In this step, think of specific ways to reach the goals in the first step, Design the parts of the Web site CHAPTER SUMMARY such as text, graphics, audio, video, and virtual reality This chapter presented the history and structure of the Internet. It discussed the world wide web n detail, with topics such as browsing, Create a Web Site Part of creating a Web site, sometimes called navigating, searching, and e-commerce. It also introduced other services available on the Web page authoring, is working on the compute to make the Web site. Most word processing Internet, such as e-mail, FTP, newsgroups and message boards, chat rooms, and instant software today can do Web page authoring so you can create basic Web pages with text and messaging. Finally, the chapter discussed Web publishing graphics To create more complicated Web pages with video, sound, animation, and other special effects, you can use Web page authoring software,which is software specifically designed to help you create Web pages. Both new and experienced users can create great Web sites with this software. Some popular Web page authoring software packages are Microsoft FrontAge, Adobe GoLive, Lotus Fastsite Macromedia Dreamweaver, and Macromedia Flash Put up a Web site After the Web pages are created, you store them on a Web server. Many Internet access providers offer their customers storage space on a Web server for a personal Web site for free. If your access provider does not have this service, companies called Web hosting services sell storage for your Web pages for a monthly fee If your access provider does not give you a Web address or if you want to have a different domain name, you can apply for a specific domain name. You then pay a small yearly fee to continue using the domain name After you have created a Web site and found a Web server to store it, you need to upload the Web site from your computer to the Web server One way to upload files is with FTP. To help others find your Web site, you should register it with several different search engines Doing this makes sure that your site will show up in the searches on related keywords. Many
KE EY ERMS You should know the Primary Terms and be familiar with the secondary Terms. > Primary Terms (shown in hold- black characters in the chapter) animation graphic player virtual reality (VR) 图形的 播放器 虑拟现实 audio e pag real time Web 声名的 实时 browser instant messaging (IM) search en Web address 即时信息 搜索引擘 网络地址 cable modem Internet search text Web browse 缆调制解调器 因特网 索文本 网格浏览器 chat IP address streaming Web page 天 网络协议地址 流媒体技术 网贞 hat room ISDN surfing the web Web publishing 聊天室 综合服务数字网络 网上冲浪 发布网页 dial-up access link uploading Web server 号上网 网络服务器 domain name mailing lis URI Web site 域名 邮件列表 在因特网上指定信息 网站 downloading message board 通用资源定位 World Wide Web 言板 方维网,全球资讯网 DSI MP3 视频 数字接入线路 种音频压缩格式 ecommerce multimedia 电子商务 多媒体 e-mail newsgroup 电子邮件 新闻相 FTI 文件传输协议 >>Secondary Terms (shown in italic characters in the chapter) Adanced Reserch Projects File Transfer Protoco Internet Corporation for Agency(ARPA 文件传输协议 Assigned Names and 贴,发这 美国国防部》高级研究计GHF Nambers (ICANN) siming aui 划局 可交换图像文件 互联网域名与管理机构 音轴流 anintalnd GIl apical imy Internet Protocol address streaming rin 动态可交换图像 网络协议地址 频流 ARPANET hits Internet2 Uniform Resource Locator 阿帕网(美国国防部高级点击 第2代因特网 在因特网上指定信息位置 研究计划局建立的计算ho IPEG 的表示方法 机网 主机 图像压缩格式 Web hosting serwces nat client htlp Hypertext Transfer 网络主机服务 聊天程序客户端程序 Protocol 关健字 Wet pge authoring click 超文本传输协议 Mowing Pictures Experts 网负制作 点击 hyperiN Group(MPEG) World Wide Web digital subscriber line 超链接 种动态图像与声音压缩 Consortium(W3C) 数字接入线路 instant essenti (IM) 万维网协会 electronic commerce 即时信息 PNG format www 电子高务 Integrated Services Digital可移植网络图像格式 方维网 Network 综合服务数字网