1. Unit 3 The Internet and the World Wide Web

2. What is the Internet? • Connected computers • Started in 1960s! • Used by gov’t, education, military • Each contains info

3. Other Terms for Internet • The Net • Info Superhighway • Cyber-space

4. Internet vs. WWW Internet • Physical make-up World Wide Web • Collection of info But used interchangeably

5. What to Do on Internet • Electronic mail • Information • Shopping • Download Programs • Games/Entertainment • Discussion Groups

6. Format of the Web • Web Site • Home page • URL • Hypertext links

7. How to Access the Web • Use a Browser • Netscape • Internet Explorer • NSCA Mosaic • Use Unix (pros)

8. URL Addresses

9. Browser Features • Open a site with URL • Back & forward • History • Bookmarks • Options: Graphics off

10. Search Engines • Yahoo • AltaVista • Infoseek • Excite

11. Shopping on the Web • Shopping Malls • Security issues • E-cash

12. New Developments • Old: Text & Graphics • Sound • Video & Animation • 3-D Worlds • Java (cross-platform)

13. Info Transfer Terms • Upload • Download

14. How to Connect • Computer • Program (browser) • Modem • ISP

15. Private Local Regional National Commercial AOL Compuserve Prodigy Kinds of ISPs Internet Service Provider

16. How Info Transfers • Backbone (spine) • Router (nerves) • Packets (message) • TCP/IP (language) • Download Information