entry 2 - CALL and search engines

This week we learned about these two topics which are the evolution of CALL and the search engines and online database which I learned during my diploma but this time we learn more detail about CALL.

Next, we learned what is search engines. Basically, a search engine is a software program that searches for sites based on the words that you designate as search terms. Search engines look through their own databases of information in order to find what it is that you are looking for.

Search engines automatically create website listings by using spiders that "crawl" web pages, index their information, and optimally follows that site's links to other pages. Spiders return to already-crawled sites on a pretty regular basis in order to check for updates or changes, and everything that these spiders find goes into the search engine database.


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