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Our Lady of the Rosary College S3 Computer Literacy

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Presentation on theme: "Our Lady of the Rosary College S3 Computer Literacy"— Presentation transcript:

1 Our Lady of the Rosary College 2007-2008 S3 Computer Literacy
Lesson 9 Web Browser Web-based Software Mr. Ku Heung Chin

2 Internet and WWW Internet (1970s) WWW – World Wide Web (1990s)
a collection of interconnected computer networks i.e. network of networks WWW – World Wide Web (1990s) WWW is one of the services accessible using the Internet. Internet WWW File Sharing

3 WWW Basis How does it work? HyperText Transfer Protocol (HTTP).
HyperText Markup Language (HTML). Uniform Resource Locator (URL) How does it work?

4 How WWW works? World Wide Web <HTML> <HTML>
URL: <HTML> <head><title> Google</title> </head> …….. Google’s web Server Yahoo’s web Server OLR’s web Server HTTP Request HTTP Response <HTML> <head><title> Google</title> </head> ……..

5 Web-based Software can be accessed using a Web browser only.
No need to installing any application software other than a Web browser. Eamples: Webmail Google Docs Google Maps Google Translate

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