How do search engines like Google work?

Can you imagine your life without Google?? In the present world of digitization, people are completely dependent on search engines for every small information. It is very interesting to know how can Google give so much information on so many websites in a blink of an eye? How does it work?

Google has its most powerful tool: its search engine. Google uses a special algorithm to generate search results. It uses automated programs called Spiders or Crawlers. With the help of indexed keywords, and its unique algorithm google displays the search results.

Google has the trademarked algorithm called Page Rank, which assigns each Web page a relevancy score, depending on the location of keywords within the web page, history of the web page and determines its relevance.