JSS 3 WEEK 2 LESSON NOTE_ FIRST TERM 2023

 

JSS 3💥

TOPIC: INTERNET

OBJECTIVE

   i.     Define search engine

 ii.     List examples of search engines.

 iii.   List the uses of search engines.

Introduction

In computing, series of data and information are worked on. It is very possible to forget the actual location where one has stored a particular data on a personal computer or could not even remember where the data or information is located on the internet. A software application has be designed to help solve this problem of finding data either the location is known or unknown. This program is referred to as a SEARCH ENGINE.



Search Engine:

A search engine is an information retrieval system that helps to locate data or information either on a personal computer or on the WWW network. It is a computer program designed to search for documents containing a particular word or words on the internet.

Search engine presents or brings to the user the locations of all the documents that the search word or phrase is contained and by so doing, it makes information retrieval easy.

A search engine is a web based tool that enables users to search for and identify items in a database that correspond to a special keyword(S) and returns a list    of the documents where they are located. On the WWW.          

Examples of Search Engine

There are numerous search engines, some of the common ones are:

a)     Google: www.google.com

b)    Mama: www.mama.com

c)     Ask: www.ask.com

d)    Yahoo: www.yahoo.com

e)     Savvy search: www.savvysearch.com

f)      Looksmart: www.looksmart.com

g)    Hotmail: www.hotmail.com

h)    Bing: www.bing.com

i)       WebCrawler: www.webcrawler.com

Uses of search Engines

The internet is a vast resource of information. Search engine is an important tool to locate information and retrieve them. Benefits of search engines are:  

       I.            It enables easy search for information on the internet

    II.            It helps in locating or finding the addresses of a website

 III.            It helps in downloading of files or document

IV.            It is used to search newsgroup posting, online and offline events and perform services such as chat, instant messaging and product, searches for online shopping.

   V.            Search engine provides search access to database of third parties, which allow one to search through co-operate reports, telephone listings, zip code and so on.

How to use a search engine

When searching, there are some rules to kept in mind. The more precise that you are the more accurate the result would be. For instance, to know more about an easy way to simplify a search is to place quotes around the search word or phrase. For example, “social studies”, ‘use of the internet”, “why student fail” etc. this would help focus the word combination.



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