in this ppt, we will learn about computer systems and applications of the internet, like E-governance, E-shopping.

1. Application of internet
content
• Information retrieval
• Using search engine
• Finding people on the Net
• Email
• Chat
• Video conferencing
• blog
• IT application
• Social Networking
• Mobile technology
• bluetooth

2. Application of internet

3. internet
• Internet is the greatest factor for today’s world of information. Today we
are mostly depended on internet for information whether it is a matter of
sharing data on social media or cooking a dish or searching answers of any
question or learning through youtube or solving a technical issue or
problem
• World Wide Web, Web Servers, Web Clients, Web sites, Web pages, web
browsers
• Blogs
• newsgroups
• HTML
• Web address, e-mail address
• Files

4. Conti-
• Information retrieval
• Communication
• Research and education
• Health and medicine
• Entertainment
• E-commerce (e-shopping , e-banking , etc)

5. Information Retrieval
• The world wide web is a huge database of information
• All the documents and other resources which are ionter-related
logically by hyperlinks and accessed by URL.
• Internet is used to share information across the world, these
interconnected networks exchange information by using same
standards and protocols.
• The main software used for web browsing is called web browser.
• Search services are of two types-
• 1 Using search engine
• 2- Using directories

6. Search engine
• To get correct or relevant information quickly, you can make use of special
software for searching called search engine.
• Some most commonly used search engine are-
• 1 Google
• 2 yahoo
• 3 bing
• The link structure of the web binds all of the pages together. Link allpow
the search engine automated robots called Crawlers / spider / bots.
• Search engine lists the web sites that contain this information, these results
are known as HITS. The word you type into the search box is called
Keywords.
• Search is done in two parts-1 Crawling and Indexing 2- Providing answers

7. Internet uses-

8. Using Directories
• Internet directories are some on-line web sites that categorize the
web page into different categories.
• Use AND ,OR ,NOT
• Nesting- Many database allow for very complex searching using
Nesting.
• Searching for people using Internet- www.whitepages.com ,
www.spokeo.com , www.peoplesmart.com , www.peoplefinders.com

9. Communication
• E-mail: Sending a message by ordinary mail has nearly become an
obsolete method. Electronic mailing, i.e., sending mail through
computers on Internet has become so popular that the world now
seems to be very very small. E-mail has proved useful to students by
helping them in getting lectures from professors sitting abroad,
researchers from all over the world can share their views and you can
greet you loved ones from time to time by sending them e-greetings.

10. Netiquettes-
• the network etiquettes, Netiquettes are the some rules for acceptable
online behavior which are to be followed by the user.
1. Identify yourself
2. Use a signature
3. Include a subject
4. Respect other’s privacy
5. Acknowledge
6. No spam
7. Use appropriate language

11. Protocols used for mail delivery
• IMAP(internet message access protocol)
• POP (post office protocol 3)
• SMTP (simple mail transfer Protocol)
• HTTP-is not a protocol dedicated for e-mail communications.
• Hotmail uses HTTP as an e-mail protocol.