A search engine is designed to search for information on the  World Wide Web. The search results are generally presented in a list of  results often referred to as search engine results pages (SERPs). The  information may consist of web pages, images, information and other  types of files. Some search engines also mine data available in  databases or open directories. Unlike web directories, which are  maintained only by human editors, search engines also maintain real-time  information by running an algorithm on a web crawler.
	
		
			
		
		
	
				
			
							

 
