Search Engine Powerpoint. 1. Search Engines Done by: Afra Alkhajah Maitha Mohammed S. What are search engines?S It is basically a type of program that uses keywords to search for documents that relate to these keywords and then puts the results found in the order of relevance to the topic that was searched for.S Examples:- Google- Alta Vista. Importance of search enginesS Search engines are important because with over 8 billion web pages available, it would be impossible to search for the information that is specifically needed. This is why search engines are used to filter the information that is on the internet and transform it into results that each individual can easily access and use within the matter of seconds.

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Types of search enginesS Crawler based search enginesS DirectoriesS Specialty search enginesS Hybrid search enginesS Meta search engines. Crawler based search enginesS Are search engines that use software programs that are called, “Spiders”, “crawlers”, “Robots”, “Bots”.

These programs can access the webpages to categorize and analyze them and then add them in the search engine data base, where any user can find them when searching. The Crawler based search engines are constantly updated with new webpage that would be available in their database.S Examples:- Google- Yahoo- Ask.com. GoogleS Google began in January 1996 as a research project.S Founded by Larry Page and Sergey Brin.S Most popular search engine.S Googles homepage includes a button labeled 'Im Feeling Lucky'. When a user types in a search and clicks on the button the user will be taken directly to the first search result.S Besides the main search-engine feature of searching for text, Google Search has more than 22 'special features” like: weather, unit conversion, currency conversion, time, calculator, maps, and sports scores.

Yahoo!S In January 1994, Jerry Yang and David Filo, Stanford University graduates, created a website called “David and Jerry’s Guide to the World Wide Web”, in Sunnyvale, California.S In April 1994, “David and Jerry’s Guide to the World Wide Web” was renamed to “Yahoo!”S Yahoo! Provides Internet communication services such as Yahoo! Messenger and Yahoo! Mail.S Yahoo! Offers social networking services such as My Web, Yahoo! Personals, and Flickr. Ask.comS a question and answer focused search engine.S Founded in 1998 by Garrett Gruener and David Warthen in Berkeley, California.