XP Practical PC, 3e Chapter 8 1 Browsing and Searching the Web

XP Practical PC, 3e Chapter 8 2 Browsing and Searching the Web In this Chapter, you will learn: –What a Web page is –What a URL is –How a browser works –How to use a search engine –How to save text and graphics found on the Web –How to create your own Web page –About high-speed and wireless Internet-access equipment

XP Practical PC, 3e Chapter 8 3 Web Pages A Web page is a document that can contain text, graphics, videos, sound clips and links to other pages. Links between pages are called hypertext links and allow you to follow an information thread. A computer linked to the Internet that holds a Web page is called a Web server.

XP Practical PC, 3e Chapter 8 4 Web Pages A group of related Web pages that contain information about a specific topic (such as a company, person, event, etc.) is called a Web site. Each Web site is created and maintained by one or more people called Webmasters. The main page on a Web site is called a home page.

XP Practical PC, 3e Chapter 8 5 Web Pages A Web page often contains many links to other pages. These links may be from a particular string of words (called a text link) or from a picture (graphics link). When you move your cursor over one of these links, it turns into a hand-shaped link pointer. Clicking a link sends a copy of the new page to your PC for you to view.

XP Practical PC, 3e Chapter 8 6 Web Pages A typical Web page Video Display Sound Clip Text link Graphics link

XP Practical PC, 3e Chapter 8 7 What’s a URL? Each Web server is located by a specific address called a URL (uniform resource locator). URLs are constructed of several pieces: –Most begin with (Hypertext Transfer Protocol), for secure sights. –Web server’s name – i.e. –The top-level domain – i.e..com,.org, or.edu –Using these three pieces connects you to the Web site’s home page –

XP Practical PC, 3e Chapter 8 8 What’s a URL? URLs are constructed of several pieces (cont): –You can also connect directly to a specific page on the Web site using the folder and file name –Web pages are normally stored in HTML (Hypertext Markup Language) format –Path names follow the server name and are separated from it by slashes. –The world news site on CNN is:

XP Practical PC, 3e Chapter 8 9 What’s a URL? The format of a URL Web Protocol Server name including top level domain Web page folder, name and extension

XP Practical PC, 3e Chapter 8 10 Using a Web Browser A Browser is software that reads Web pages and interprets the HTML tags embedded in each page so that it can be displayed on your screen. Two popular browsers are Microsoft Internet Explorer and Netscape Navigator. Some times in order to display special files or media, you might need to install a special plug-in. Browsers often store information about you and your preferences in cookies on your PC.

XP Practical PC, 3e Chapter 8 11 Using a Web Browser Looking at a Web Browser URL Web page Title URL of link that is currently being pointed to Back & Forward buttons navigate through Web pages

XP Practical PC, 3e Chapter 8 12 Using a Search Engine A search engine is a giant catalog similar to the one at your library that allows you to locate information on Web pages. Search engines work with key words or phrases Most can handle both simple and combination searches. Google and Yahoo are two common search engines.

XP Practical PC, 3e Chapter 8 13 Using a Search Engine The Yahoo search engine

XP Practical PC, 3e Chapter 8 14 Saving Text and Graphics from the Web You can print a Web page by using your browser’s print button. You can copy text from Web pages by highlighting it and using the copy option on the browser. You can then paste it into any program. You can copy graphics from the Web by right- clicking them and using the Save Picture as option. Be aware that most information is copyrighted!

XP Practical PC, 3e Chapter 8 15 Saving Text and Graphics from the Web Copying information from a web site You can highlight any text on a Web page, copy it to the clipboard, and paste the text into a word processor Right clicking on a graphic displays the save Picture As option.

XP Practical PC, 3e Chapter 8 16 Hardware – High-speed and Wireless Internet-access equipment There are other higher speed and wireless alternatives to modems: –ISDN – medium speed service using 2 telephone lines and a modem can deliver up to 128 Kbps. –DSL (Digital Subscriber Line Service) – special telephone line delivers 1 to 4 Mbps. –T-1 service – dedicated high speed line for commercial use, but too expensive for home use.

XP Practical PC, 3e Chapter 8 17 Hardware – High-speed and Wireless Internet-access equipment Comparison of different Internet connections

XP Practical PC, 3e Chapter 8 18 Hardware – High-speed and Wireless Internet-access equipment There are other higher speed and wireless alternatives to modems (cont): –Direct satellite service – uses satellite disk to receive transmissions. Receives data only, telephone line used to send data. –Cable modem – cabled back to cable TV company. Currently fastest Internet option for individual PCs.

XP Practical PC, 3e Chapter 8 19 Hardware – High-speed and Wireless Internet-access equipment A satellite connection

XP Practical PC, 3e Chapter 8 20 Hardware – High-speed and Wireless Internet-access equipment A cable modem setup

XP Practical PC, 3e Chapter 8 21 Hardware – High-speed and Wireless Internet-access equipment There are other higher speed and wireless alternatives to modems (cont): –Voice/data cellular phones – uses hand held cellular phones. Have limited capabilities with tiny screens and small keyboard. –Cellular modem – can connect any PC or laptop to your cellular phone with a cellular modem.

XP Practical PC, 3e Chapter 8 22 Creating your own Web Pages Using Word to create a Web Page You can create a web page in Word and then save it as an HTML Document You can add graphics You can create links to other Web pages

XP Practical PC, 3e Chapter 8 23 What do you think? The Filtering Controversy 1.If you had children, would you use filtering software on your home PC to block access to certain Web sites? 2.Do you think schools and public libraries that provide Internet access to children should use filtering software? 3.Do you believe that in some situations it is appropriate to use filtering software on computers accessed only by adults?

XP Practical PC, 3e Chapter 8 24 Chapter Summary You should now be able to: –Understand how to locate Web sites. –Understand what the parts of a Web Page URL mean. –Work with a Web browser –Use a search engine –Save and print text and graphics from a Web page –Identify and select high speed or wireless Internet- access equipment