1. CS 16 – Oct. 30 Text vs. Hypertext Web terminology Domains HTML

2. Hypertext A text document that contains links to other documents. Also may contain “multimedia” Filename *.html Software: editor…browser.

3. Some terminology Internet = global “network of networks” Some Internet applications: –WWW = linked documents on the Internet –E-mail –chat –FTP = file transfer prototcol

4. Web terminology HTML = standard language for hypertext Web page = hypertext document (*.html) Web site = collection of pages & folders usually starting with index.html Web server = machine containing site Web browser = program that interprets HTML to show on screen

5. Web addressing Location of file is given by a Web address or URL. http://www.seds.org/billa/tnp/saturn.html saturn.html = page billa/tnp = folders www.seds.org = site [ server.place.domain]

6. Domains Three letter for U.S. (.com,.org,.net,.edu,.mil,.gov) Two letter for countries (.ca,.uk,.za,.ch,.de,.is, cn,.at,.us ………) Beware of exceptions Newer domains (.info,.museum,.biz, …)

7. Making Web pages Web pages written in HTML. 2 ways… Type in HTML code in text editor. –Enter “tags” as you go. Use “web generator” such as Dreamweaver –WYSIWYG

8. Common tags h1, h2, etc. = headings br = line break p = paragraph ol, ul, li = used for lists hr = horizontal rule b, i = bold or italic sub, sup = subscript or superscript

9. Examples 7 th Who wrote Das Rheingold ? Gold Silver Bronze

10. Web Browsers Mosaic, Netscape, Opera, Mozilla, lynx, … Opera features: –Mouse gestures –Tabs –+/– keys –Shift-F6 to tile [ ctrl-shift-F5 to un-tile ] Rivalry with IE

11. Web Surfing Type in URL (if you know it) Start with index site Search engine –Quotes “swan lake” –Minus waterloo –university Example results

12. Some sites world.altavista.com terraserver.microsoft.com –(Screen dump to capture image) factfinder.census.gov www.htmlhelp.com http://www.alexa.com Sites that show your IP address…

13. Privacy & Cache Hmmm, different browsers & versions behave slightly differently…. In Opera, hit F4. You’ll see: –history –list of links Other things –security on site (https:// or.shtml) –where it’s cached –Where are cookies stored ?

14. Web issues Check date of article Check for corroborating info Mistakes & bias Some things harder to find on the Web? Internet quite powerful when you combine 2+ sites or programs –Ex. Searching for airfares, hotel rooms

15. Scavenger hunt Looking for a house… –Real estate Website to find listings –Google earth to look at house & lot –Mapquest to find nearest school, stores Media bias –Google news collects headlines –Is the set of “news sources” biased? International issues –In some countries, Internet access is restricted! –Languages other than English