Internet II – Internet & Search Engines SS3 Data Processing Lesson Note

Meaning of internet

The Internet is a global system of interconnected computer networks that use standard Internet protocol suits to serve billions of users worldwide. The Internet came from two words (Interconnection and Network)

ADVANTAGES OF INTERNET

•  Communication: We can communicate in a second with a person who is sitting in another part of the world via the internet such as e-mail to establish a global friendship, and share thoughts.
• Information: Information is the biggest advantage of the internet. Any kind of information on any topic is available on the internet. There is a huge amount of information available on the internet for every subject known to man using search engines such as Google and Yahoo.

• Entertainment: Through the internet, we can download games, and visit chat rooms. Chat rooms are popular because users can meet new and interesting people. Music, hobbies, news and more can be found and shared on the internet.

• Services: Many services are now provided on the internet such as online banking, job seeking, and purchasing tickets through the internet.

• E-commerce:  Through the Internet, business activities (buying and selling) and other business-related information can be transferred across the globe via the internet. 

 DISADVANTAGES OF INTERNET

• Computer virus

• Pornography 

• It wastes a lot of time

• High rate of crime ( cybercrime) 

  SEARCH ENGINE

Meaning of search engine

Search engine is a software system that is designed to search for information on the World Wide Web (www). 

A search engine is a website that collects and organises content from all over the internet. Those wishing to locate something would enter a query about what they like to find and the search engine provides links to content that matches what they want.

For example, if you want to search for the “meaning of  Computer “ what you need to do is to type what is a computer in a search engine and it will display all the meanings of a computer on the internet.

EXAMPLES OF SEARCH ENGINE

USES OF SEARCH ENGINES

The following are some of the uses of search engine 

• It is used to  search for  news stories 

• It is used to search for online events

• It is used for chatting and instant messages

• It is used to find locations

• It used to identify plants, animals and people

• It is used to search for technology and vehicles