What is Search Engine
Search engine is a programme, which help users to list of websites by typing specific keywords. The searching results may consist of web pages, image or other type of files.
How to use it?
There are many search engines on the Internet, such as Yahoos, Google and AltaVista.
When users arrive at the search engine, they may type specific keywords in the textbox, and a list of web links corresponding to the keywords will be displayed on the web pages. Users can choose one of the web links to get information.
For example, if a user wants to find information about Thomas Alva Edison, first of all he should enter “Thomas Alva Edison” to the textbox, and press the search button, the he will see a list of web links which are about Thomas Alva Edison. He can click one of the web links to get detailed information.
*Users should type the keywords before they press the button. 
*Search engine will list all the results, which are related to the keywords.
The source is come from
http://www.sc.edu/beaufort/library/pages/bones/lesson1.shtml
http://www.webopedia.com/TERM/s/search_engine.html
http://en.wikipedia.org/wiki/Search_engine
