Internet Services

INTERNET SEARCH ENGINES
 Internet search engine is an application, which helps users to
locate Web sites containing useful information and references.
 To search Information :
 A user types the description of the information using the user
interference of the search engine.
 The search engine then searches the requested information on the
WWW and returns the results to the user.

 Results enable the user to locate the requested quickly from the
last ocean of information available on the internet.

• E-mail
• Blog
• Chatting
• Social Networking Sites
• Video Conferencing
• Newsgroup
• E-commerce

• E-Mail is a rapid and productive means of
communication
• It is faster than Paper Mail .
• Unlike telephone, The persons communicating with
each other need not to be available at the same time.
• Unlike Fax documents , Email documents can be stored
in a computer and be easily edited using editing
programs.

• The term Blog is an abbreviation of Weblog.
• It is used to describe a website ,usually maintained by
an individual.
• A blog features remarks/comments, description of
events etc.
• Entries are usually displayed in the reverse
chronological order.
• It allows us to interact with readers interested in the
same topic

• Internet provides a facility to exchange typed-in messages online
with people all over the world .
• It is done through chat rooms or instant messaging.
• A Chat Room is a virtual room where a Real Time Online
conversation takes place between many computer users.
• Instant Messaging , or IM is also a real time online
communication with a selected group of people.
• For Example- Whatsapp, ChatOn, G-talk etc

• Social Networking Sites or SNSs are used to build online
communication to share ideas , activities ,events and exchange
files and pictures.
• Facebook, Orkut, Twitter etc., are some of the very popular
social networking sites.
• These sites are used by the people almost everyday for chatting,
playing games and staying connected with each other.

• Video Conferencing is alive telecommunication between two
or more people at different locations.
• It is an alternative to face-to-face meetings .
• It usually involves audio, video and data.

 Devices Required For Video Conferencing
• Webcams
• Microphones
• Speakers
• Visual Display
• User Interface
• Control System

• A Newsgroup is an online discussion group that allows people
to interact on a particular topic.
• Unlike an email message , a newsgroup message can be posted
by anyone .
• A use can start a discussion, post messages and respond to
postings by others.
• For Example – If a newsgroup provides the services to
exchange information about current affairs, it will have all the
postings related to it.

• E-commerce or Electronic Commerce is a very important
service provided by internet for financial transactions.
• Different types of goods can be purchased and sold from
anywhere in the world through E-commerce.
• Online banking , trading of stocks/bonds , ticket booking etc., also
come under E-commerce.
• The mode of payment for such transactions is a Credit card, Debit
Card and Net Banking.
• Amazon.com and Ebay.com are the market leaders in online
shopping in the world.

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