Description
sem-I
INTRODUCTION OF INTERNET
A PROJECT REPORT ON internet
SUBMITED BY DIVYA NADAR; ROLL NO.28
SUBMITED TO NES RATNAM COLLEGE
PROJECT GUIDE APARNA CHOUDHARI
N.E.S RATNAM COLLEGE OF ARTS, SCIENCE &COMMERCE BHANDUP (W), MUMBAI.400078
1|Page
DECLARATION
MY SELF DIVYA NADAR; ROLL NO.28, STUDENT OF F.Y.BMS OF NES RATNAM COLLEGE HERE BY DECLARED THAT I HAVE COMPLETED THIS PROJECT ON NTRODUCTION OF INTERNET FOR THE ACADEMICYEAR 2010-11 THE INFORMATION SUBMITTED IS TRUE AND ORIGNAL TO THE BEST OF OUR KNOWLEDGE.
DATE : .
SIGN. OF TEACHER
SIGN. OF THE STUDENT
2|Page
ACKNOWLEDGEMENT
I would like to acknowledge and extend MY heartfelt gratitude to the following persons who have made the completion of this Lecture Notes possible: Our project guide Mrs. Aparna choudhari for her vital encouragement and support. As well as for the help and inspiration she extended. I would also like to thank my, friends and families who have provided us with help up to a large extent.
And to God , who made all things possible.
3|Page
INDEX
SR PARTICULARS NO.
1. 2. 3 4. 5 6 7 8 INTRODUCTION EVOLUTION OF INTERNET TYPES OF INTERNET CONNECTION ADVANTAGES OF INTERNET DISADVANTAGES OF INTERNET HOW TO CREAT E-MAIL CONCLUSION BIBLIOGRAPHY
PAGE NO
05 08 10 12 15 17 19 20
4|Page
INTRODUCTION
The Internet, sometimes called simply "the Net," is a worldwide system of computer networks - a network of networks in which users at any one computer can, if they have permission, get information from any other computer (and sometimes talk directly to users at other computers). It was conceived by the Advanced Research Projects Agency (ARPA) of the U.S. government in 1969 and was first known as the ARPA Net. The original aim was to create a network that would allow users of a research computer at one university to be able to "talk to" research computers at other universities. A side benefit of ARPA Net's design was that, because messages could be routed or rerouted in more than one direction, the network could continue to function even if parts of it were destroyed in the event of a military attack or other disaster. It is easy to get the internet and the web confused, but they are not the same thing. The internet is the actual physical network. It is made up of wires, cables, and a satellite being connected to this network is often described as being online. The internet connects millions of computers and resources throughout the world. The web is a multimedia interface to resources available on the internet.
5|Page
Every day over a billion users from every country in the world use the internet and the web. The most common uses are following:
1. COMMUNICATING:
Communicating is by far the most popular internet activity. You can exchange emails with your family and friend almost anywhere in the world. You can join and listen to discussion and debates on wide variety of special internet topics. You can even create your own personal web page for friends and family to visit.
2. SHOPPING
Shopping is of the fastest applications. You can visit individual stores or a cybermall, which provides access to a variety of different stores. You can window shop, look for the latest fashions, search for bargains, and make purchases. You can purchase goods using checks, credit cards, or electronic cash. growing internet
6|Page
3. SEARCHING
Searching for information has never been more convenient. You can access some of the world¶s largest libraries directly from your home computer. You can visit virtual libraries, search through their stacks, read selected items, and even check out books. You will also find the latest local, national, and international news. Most news papers maintain an online presence and include interactive and multimedia presentations related to current news stories.
4. ENTERTAINMENT
Entertainment options are nearly endless. You can find music, movies, magazines and computer game. You will find live concerts, movie preview, books clubs, and interactive live games.
5. EDUCATION OR E-LEARNING
Education or e-learning is another rapidly emerging web application. You can take classes of almost all subjects. There are courses just for fun and there are course for high school, college, and graduate school credit. Some cost nothing to take and others cost a lot.
7|Page
EVOLUTION OF INTERNET
The vast, global internet of today had rather humble origins when it initiated. In 1969, the Department of Defense Advanced Research Projects Agency (ARPA) developed an experimental network called ARPA net to link together four supercomputing centers for military research. This network had the many and difficult design requirements that it had to be fast, reliable, and capable of withstanding a nuclear bomb destroying any one computer center on the network. From those original four computers, this network evolved into the sprawling network of millions of computers we know today as the internet. The internet itself is really a massive "network of networks." There is no central "Internet, Inc," to which you can connect. Essentially, it is a collection of Internet service providers (ISPs) who each operate their own networks, with their own clients, and agree to interconnect with each other and exchange packets. Many of the large ISPs sell connections to their network to smaller ISPs, some of whom again sell connections to other ISPs. Ultimately, these ISPs at all levels sell connections to individuals and corporations, who then merge their networks (or individual computers) into this larger network called the internet.
8|Page
While there is no exact governance of the Internet, communication standards and coordination of ISP actions are overseen by a nonprofit organization called the Internet Society. An affiliated organization, the Internet Engineering Task Force (IETF) coordinates the work of numerous committees that define Internet communication standards and research methods of explaining and improving Internet communication. The actual communication standards are referred to as RFCs (Requests for Comments) and are voluntarily adhered to by all ISPs. Internet uses can be simply categorized as publishing and getting information on various subjects like marketing, management, science, new technologies, training materials, jobs, higher education, mathematics, music, games, software, etc. and E-Commerce And the kind of information available in the internet can also be listed as text documents, graphic files, sound and video files, downloadable games and software, demo games and software, etc. At the speed the internet has been evolving, many predictions can be made about the internet in the future, like main communication method coming with functions of being translated automatically into the language preferred by the receiver, finding a tune through humming into the microphone, virtual tours of a house, car, etc. could become common thing. This is what the Internet has become today, starting from its modest birth in 1969, to become an indispensable service for the human race at present and will remain the same in the future. 9|Page
TYPES OF INTERNET CONNECTIONS
1) DIAL UP CONNECTIONS
Usually in small time organizations and residences the user connects to the internet using telephone lines and 50 kbps modem. This kind of connection is known as Dial-up Connection which uses modem to Dial a telephone number given to you by the Internet Services Provider (VSNL etc.). However, this connection is not permanent. It begins with ISP¶s Server answers the call and ends when the PC hangs UP. However, the biggest drawback of Dial up Connections is the Telephone is simultaneously used with the Internet Connection which will results into heavy Telephone Bills.
2) ISDN (INTEGRATED SERVICES DIGITAL NETWORK)
It is a leased line which provides more bandwidth than compared to the modems discussed above. The ISDN lines provide data transfer rate of 64 kbps or 128 kbps.This helps in faster access of internet and downloads. The ISDN connection is through normal telephones which requires Terminal Adapter.
3) CABLE MODEM:
It is gain rapid attention because of huge bandwidth and data transfer rate of more than 2048 kbps. Apart from this the telephone lines are not engaged therefore the user has to pay only to the ISP (Internet service provides).
10 | P a g e
4) BROAD BAND CONNECTIONS:
In Local Area Network the computer users share a single Internet connection. However Dial-up Connections will not be able to satisfy such a requirement, therefore many companies have come out with a solution to solve this problem by providing services through cable TV satellite service providers etc. These high speed services are called broad band services. These high speed services are called broad band services. The Broad than a Dial-up connection. Now a day¶s many schools and colleges have opted for Brad Band connections therefore large files and web pages are downloaded quickly. Now a day¶s many users are preferring Broad Band Service as the Services are priced within the reach of many individual.
5) DSNL TECHNOLOGIES (DIGITAL SUBSCRIBER LINE):
It requires special modem to increase data transmission speed more than 500 kbps by using the existing telephone wires. DSL Technologies would help in faster surfing and speed up downloading of files/audio/video etc. Its is much more faster than telephone modems which support transmission speed of not more than 56.6 kbps and 64 or 128 kbps for ISDN Lines. The user has to pay extra for these services.
11 | P a g e
ADVANTAGES
The internet provides many facilities to the people. The main advantages of internet are discussed below.
1. SHARING INFORMATION
You can share information with other people around the world. The scientist or researchers can interact with each other to share knowledge and to get guidance etc. Sharing information through internet is very easy, cheap and fast method.
2. COLLECTION OF INFORMATION
A lot of information of different types is stored on the web server on the internet. It means that billions websites contain different information in the form of text and pictures. You can easily collect information on every topic of the world. For this purpose, special websites, called search engines are available on the internet to search information of every topic of the world. The most popular search engines are altavista.com, search.com, yahoo.com, ask.com etc. The scientists, writers, engineers and many other people use these search engines to collect latest information for different purposes. Usually, the information on the internet is free of cost. The information on the internet is available 24 hours a day.
3. NEWS
You can get latest news of the world on the internet. Most of the newspapers of the world are also available on the internet. They have their websites from where you can get the latest news about the events happening in the world. These websites are periodically updated or they are immediately updated with latest news when any event happens around the world. 12 | P a g e
4. SEARCHING JOBS
You can search different types of jobs all over the world, most of the organizations/departments around the world, advertise their vacant vacancies on the internet. The search engines are also used to search the jobs on internet. You can apply for the required job through internet.
5.
ADVERTISEMENT
Today, most of the commercial organizations advertise their product through internet. It is very cheap and efficient way for the advertising of products. The products can be presented with attractive and beautiful way to the people around the world.
6. COMMUNICATION
You can communicate with other through internet around the world. You can talk by watching to one another; just you are talking with your friends in your drawing room. For this purpose, different services are provided on the internet such as;
y y y y
Chatting Video conferencing E-mail Internet telephony etc.
7. ENTERTAINMENT
Internet also provides different type of entertainments to the people. You can play games with other people in any part of the world. Similarly, you can see movies, listen music etc. You can also make new friends on the internet for enjoyment.
13 | P a g e
8. ONLINE EDUCATION
Internet provides the facility to get online education. Many websites of different universities provide lectures and tutorials on different subjects or topics. You can also download these lectures or tutorials into your own computer. You can listen these lectures repeatedly and get a lot of knowledge. It is very cheap and easy way to get education.
9. ONLINE RESULTS
Today, most of the universities and education boards provide results on the internet. The students can watch their results from any part of country or world.
10. ONLINE AIRLINES AND RAILWAY SCHEDULES
Many airline companies and Pakistan railway provide their schedules of flights and trains respectively on the internet.
11. ONLINE MEDICAL ADVICE
Many websites are also available on the internet to get information about different diseases. You can consult a panel of online doctors to get advice about any medical problem. In addition, a lot of material is also available on the internet for research in medical field.
12. Email
Email is now an essential communication tools in business. It is also excellent for keeping in touch with family and friends. The advantages to email is that it is free ( no charge per use) when compared to telephone, fax and postal services.
14 | P a g e
DISADVANTAGES
Although internet has many advantages but it also has some disadvantages. The main disadvantages are:
1. VIRUSES
Today, internet is the most popular source of spreading viruses. Most of the viruses transfer from one computer to another through e-mail or when information is downloaded on the internet. These viruses create different problems in your computer. For example, they can affect the performance of your computer and damage valuable data and software stored in your computer.
2. SECURITY PROBLEMS
The valuable websites can be damaged by hackers and your valuable data may be deleted. Similarly, confidential data may be accessed by unauthorized persons.
3. IMMORALITY
Some websites contains immoral materials in the form of text, pictures or movies etc. These websites damage the character of new generation.
4. FILTRATION OF INFORMATION
When a keyword is given to a search engine to search information of a specific topic, a large number of related links a displayed. In this case, it becomes difficult to filter out the required information.
15 | P a g e
5. ACCURACY OF INFORMATION
A lot of information about a particular topic is stored on the websites. Some information may be incorrect or not authentic. So, it becomes difficult to select the correct information. Sometimes you may be confused.
6. WASTAGE OF TIMES
A lot of time is wasted to collect the information on the internet. Some people waste a lot of time in chatting or to play games. At home and offices, most of the people use internet without any positive purpose.
7. ENGLISH LANGUAGE PROBLEMS
Most of the information on the internet is available in English language. So, some people cannot avail the facility of internet.
16 | P a g e
HOW TO CREATE EMAIL
Electronic mail, commonly called email or e-mail, is a method of exchanging digital messages from an author to one or more recipients. Modern email operates across the Internet or other computer networks. Some early email systems required that the author and the recipient both be online at the same time, a la instant messaging. Today's email systems are based on a storeand-forward model. Email servers accept, forward, deliver and store messages. Neither the users nor their computers are required to be online simultaneously; they need connect only briefly, typically to an email server, for as long as it takes to send or receive messages. An email message consists of three components, the message envelope, the message header, and the message body. The message header contains control information, including, minimally, an originator's email address and one or more recipient addresses. Usually descriptive information is also added, such as a subject header field and a message submission date/time stamp.
Step:1 Left mouse click the icon to open a New Email Window Step:2 Note three main areas first: a place for an email address, 2nd: a place to write a subject of your email and 3rd: an area to place your message, picture, jokes, links to web pages and more. Step:3 Address your mail to a contact last, because that way you can¶t accidentally send it before it¶s finished (it happens with new users).
17 | P a g e
Step:4 Fill in text in the box pertaining to the email theme. You should always put a subject to let the person receiving the email know what is contained in the email you are sending. Step:5 Type in your message into the mail body of the email. The area for typing works just like a Word Processor program. Complete your message and it¶s now ready to address and send (when you learn the basics of email composition, there are countless things you can do when composing and email, like pictures, copy and paste text from the internet or other document, or have fancy background stationery.) Step:6 Type the email address into the box. If the settings are correct, it will auto fill the address with a few keystrokes. A better way is to use the mouse to address emails, but you need to have the addresses in your "Address book". Notice the little book icon just left of the "To" (very small) by the address box. Click on that book icon, and a list of your email addresses will show. Select the email name you want and click the "To:>" to input that email address into a list in the "To" box. If you want to address to more than one contact, repeat as many times as required; each time select the name and then click ³To:>". When all contacts are completed, click . Step:7 Send your email. The left icon is the icon; click on this icon and your mail is on the way to a huge server run by an Internet Service Provider (ISP) somewhere in the world and is ready for your contact to retrieve next time they are using their email program eg. Outlook Express or Hotmail.
18 | P a g e
CONCLUSION
Internet/WWW
y y y y y
provides access to a global information system makes it possible for many to access makes it easy to publish information presents some serious legal issues is impossible to manage centrally
Future
y y y
More growth Increased commercial activity Increasing amounts of change
19 | P a g e
BIBLIOGRAPHY
www. Wikipedia.com www. Worldweb.edu
book of prof. lalwani
THANK YOU
20 | P a g e
doc_178476605.docx
sem-I
INTRODUCTION OF INTERNET
A PROJECT REPORT ON internet
SUBMITED BY DIVYA NADAR; ROLL NO.28
SUBMITED TO NES RATNAM COLLEGE
PROJECT GUIDE APARNA CHOUDHARI
N.E.S RATNAM COLLEGE OF ARTS, SCIENCE &COMMERCE BHANDUP (W), MUMBAI.400078
1|Page
DECLARATION
MY SELF DIVYA NADAR; ROLL NO.28, STUDENT OF F.Y.BMS OF NES RATNAM COLLEGE HERE BY DECLARED THAT I HAVE COMPLETED THIS PROJECT ON NTRODUCTION OF INTERNET FOR THE ACADEMICYEAR 2010-11 THE INFORMATION SUBMITTED IS TRUE AND ORIGNAL TO THE BEST OF OUR KNOWLEDGE.
DATE : .
SIGN. OF TEACHER
SIGN. OF THE STUDENT
2|Page
ACKNOWLEDGEMENT
I would like to acknowledge and extend MY heartfelt gratitude to the following persons who have made the completion of this Lecture Notes possible: Our project guide Mrs. Aparna choudhari for her vital encouragement and support. As well as for the help and inspiration she extended. I would also like to thank my, friends and families who have provided us with help up to a large extent.
And to God , who made all things possible.
3|Page
INDEX
SR PARTICULARS NO.
1. 2. 3 4. 5 6 7 8 INTRODUCTION EVOLUTION OF INTERNET TYPES OF INTERNET CONNECTION ADVANTAGES OF INTERNET DISADVANTAGES OF INTERNET HOW TO CREAT E-MAIL CONCLUSION BIBLIOGRAPHY
PAGE NO
05 08 10 12 15 17 19 20
4|Page
INTRODUCTION
The Internet, sometimes called simply "the Net," is a worldwide system of computer networks - a network of networks in which users at any one computer can, if they have permission, get information from any other computer (and sometimes talk directly to users at other computers). It was conceived by the Advanced Research Projects Agency (ARPA) of the U.S. government in 1969 and was first known as the ARPA Net. The original aim was to create a network that would allow users of a research computer at one university to be able to "talk to" research computers at other universities. A side benefit of ARPA Net's design was that, because messages could be routed or rerouted in more than one direction, the network could continue to function even if parts of it were destroyed in the event of a military attack or other disaster. It is easy to get the internet and the web confused, but they are not the same thing. The internet is the actual physical network. It is made up of wires, cables, and a satellite being connected to this network is often described as being online. The internet connects millions of computers and resources throughout the world. The web is a multimedia interface to resources available on the internet.
5|Page
Every day over a billion users from every country in the world use the internet and the web. The most common uses are following:
1. COMMUNICATING:
Communicating is by far the most popular internet activity. You can exchange emails with your family and friend almost anywhere in the world. You can join and listen to discussion and debates on wide variety of special internet topics. You can even create your own personal web page for friends and family to visit.
2. SHOPPING
Shopping is of the fastest applications. You can visit individual stores or a cybermall, which provides access to a variety of different stores. You can window shop, look for the latest fashions, search for bargains, and make purchases. You can purchase goods using checks, credit cards, or electronic cash. growing internet
6|Page
3. SEARCHING
Searching for information has never been more convenient. You can access some of the world¶s largest libraries directly from your home computer. You can visit virtual libraries, search through their stacks, read selected items, and even check out books. You will also find the latest local, national, and international news. Most news papers maintain an online presence and include interactive and multimedia presentations related to current news stories.
4. ENTERTAINMENT
Entertainment options are nearly endless. You can find music, movies, magazines and computer game. You will find live concerts, movie preview, books clubs, and interactive live games.
5. EDUCATION OR E-LEARNING
Education or e-learning is another rapidly emerging web application. You can take classes of almost all subjects. There are courses just for fun and there are course for high school, college, and graduate school credit. Some cost nothing to take and others cost a lot.
7|Page
EVOLUTION OF INTERNET
The vast, global internet of today had rather humble origins when it initiated. In 1969, the Department of Defense Advanced Research Projects Agency (ARPA) developed an experimental network called ARPA net to link together four supercomputing centers for military research. This network had the many and difficult design requirements that it had to be fast, reliable, and capable of withstanding a nuclear bomb destroying any one computer center on the network. From those original four computers, this network evolved into the sprawling network of millions of computers we know today as the internet. The internet itself is really a massive "network of networks." There is no central "Internet, Inc," to which you can connect. Essentially, it is a collection of Internet service providers (ISPs) who each operate their own networks, with their own clients, and agree to interconnect with each other and exchange packets. Many of the large ISPs sell connections to their network to smaller ISPs, some of whom again sell connections to other ISPs. Ultimately, these ISPs at all levels sell connections to individuals and corporations, who then merge their networks (or individual computers) into this larger network called the internet.
8|Page
While there is no exact governance of the Internet, communication standards and coordination of ISP actions are overseen by a nonprofit organization called the Internet Society. An affiliated organization, the Internet Engineering Task Force (IETF) coordinates the work of numerous committees that define Internet communication standards and research methods of explaining and improving Internet communication. The actual communication standards are referred to as RFCs (Requests for Comments) and are voluntarily adhered to by all ISPs. Internet uses can be simply categorized as publishing and getting information on various subjects like marketing, management, science, new technologies, training materials, jobs, higher education, mathematics, music, games, software, etc. and E-Commerce And the kind of information available in the internet can also be listed as text documents, graphic files, sound and video files, downloadable games and software, demo games and software, etc. At the speed the internet has been evolving, many predictions can be made about the internet in the future, like main communication method coming with functions of being translated automatically into the language preferred by the receiver, finding a tune through humming into the microphone, virtual tours of a house, car, etc. could become common thing. This is what the Internet has become today, starting from its modest birth in 1969, to become an indispensable service for the human race at present and will remain the same in the future. 9|Page
TYPES OF INTERNET CONNECTIONS
1) DIAL UP CONNECTIONS
Usually in small time organizations and residences the user connects to the internet using telephone lines and 50 kbps modem. This kind of connection is known as Dial-up Connection which uses modem to Dial a telephone number given to you by the Internet Services Provider (VSNL etc.). However, this connection is not permanent. It begins with ISP¶s Server answers the call and ends when the PC hangs UP. However, the biggest drawback of Dial up Connections is the Telephone is simultaneously used with the Internet Connection which will results into heavy Telephone Bills.
2) ISDN (INTEGRATED SERVICES DIGITAL NETWORK)
It is a leased line which provides more bandwidth than compared to the modems discussed above. The ISDN lines provide data transfer rate of 64 kbps or 128 kbps.This helps in faster access of internet and downloads. The ISDN connection is through normal telephones which requires Terminal Adapter.
3) CABLE MODEM:
It is gain rapid attention because of huge bandwidth and data transfer rate of more than 2048 kbps. Apart from this the telephone lines are not engaged therefore the user has to pay only to the ISP (Internet service provides).
10 | P a g e
4) BROAD BAND CONNECTIONS:
In Local Area Network the computer users share a single Internet connection. However Dial-up Connections will not be able to satisfy such a requirement, therefore many companies have come out with a solution to solve this problem by providing services through cable TV satellite service providers etc. These high speed services are called broad band services. These high speed services are called broad band services. The Broad than a Dial-up connection. Now a day¶s many schools and colleges have opted for Brad Band connections therefore large files and web pages are downloaded quickly. Now a day¶s many users are preferring Broad Band Service as the Services are priced within the reach of many individual.
5) DSNL TECHNOLOGIES (DIGITAL SUBSCRIBER LINE):
It requires special modem to increase data transmission speed more than 500 kbps by using the existing telephone wires. DSL Technologies would help in faster surfing and speed up downloading of files/audio/video etc. Its is much more faster than telephone modems which support transmission speed of not more than 56.6 kbps and 64 or 128 kbps for ISDN Lines. The user has to pay extra for these services.
11 | P a g e
ADVANTAGES
The internet provides many facilities to the people. The main advantages of internet are discussed below.
1. SHARING INFORMATION
You can share information with other people around the world. The scientist or researchers can interact with each other to share knowledge and to get guidance etc. Sharing information through internet is very easy, cheap and fast method.
2. COLLECTION OF INFORMATION
A lot of information of different types is stored on the web server on the internet. It means that billions websites contain different information in the form of text and pictures. You can easily collect information on every topic of the world. For this purpose, special websites, called search engines are available on the internet to search information of every topic of the world. The most popular search engines are altavista.com, search.com, yahoo.com, ask.com etc. The scientists, writers, engineers and many other people use these search engines to collect latest information for different purposes. Usually, the information on the internet is free of cost. The information on the internet is available 24 hours a day.
3. NEWS
You can get latest news of the world on the internet. Most of the newspapers of the world are also available on the internet. They have their websites from where you can get the latest news about the events happening in the world. These websites are periodically updated or they are immediately updated with latest news when any event happens around the world. 12 | P a g e
4. SEARCHING JOBS
You can search different types of jobs all over the world, most of the organizations/departments around the world, advertise their vacant vacancies on the internet. The search engines are also used to search the jobs on internet. You can apply for the required job through internet.
5.
ADVERTISEMENT
Today, most of the commercial organizations advertise their product through internet. It is very cheap and efficient way for the advertising of products. The products can be presented with attractive and beautiful way to the people around the world.
6. COMMUNICATION
You can communicate with other through internet around the world. You can talk by watching to one another; just you are talking with your friends in your drawing room. For this purpose, different services are provided on the internet such as;
y y y y
Chatting Video conferencing E-mail Internet telephony etc.
7. ENTERTAINMENT
Internet also provides different type of entertainments to the people. You can play games with other people in any part of the world. Similarly, you can see movies, listen music etc. You can also make new friends on the internet for enjoyment.
13 | P a g e
8. ONLINE EDUCATION
Internet provides the facility to get online education. Many websites of different universities provide lectures and tutorials on different subjects or topics. You can also download these lectures or tutorials into your own computer. You can listen these lectures repeatedly and get a lot of knowledge. It is very cheap and easy way to get education.
9. ONLINE RESULTS
Today, most of the universities and education boards provide results on the internet. The students can watch their results from any part of country or world.
10. ONLINE AIRLINES AND RAILWAY SCHEDULES
Many airline companies and Pakistan railway provide their schedules of flights and trains respectively on the internet.
11. ONLINE MEDICAL ADVICE
Many websites are also available on the internet to get information about different diseases. You can consult a panel of online doctors to get advice about any medical problem. In addition, a lot of material is also available on the internet for research in medical field.
12. Email
Email is now an essential communication tools in business. It is also excellent for keeping in touch with family and friends. The advantages to email is that it is free ( no charge per use) when compared to telephone, fax and postal services.
14 | P a g e
DISADVANTAGES
Although internet has many advantages but it also has some disadvantages. The main disadvantages are:
1. VIRUSES
Today, internet is the most popular source of spreading viruses. Most of the viruses transfer from one computer to another through e-mail or when information is downloaded on the internet. These viruses create different problems in your computer. For example, they can affect the performance of your computer and damage valuable data and software stored in your computer.
2. SECURITY PROBLEMS
The valuable websites can be damaged by hackers and your valuable data may be deleted. Similarly, confidential data may be accessed by unauthorized persons.
3. IMMORALITY
Some websites contains immoral materials in the form of text, pictures or movies etc. These websites damage the character of new generation.
4. FILTRATION OF INFORMATION
When a keyword is given to a search engine to search information of a specific topic, a large number of related links a displayed. In this case, it becomes difficult to filter out the required information.
15 | P a g e
5. ACCURACY OF INFORMATION
A lot of information about a particular topic is stored on the websites. Some information may be incorrect or not authentic. So, it becomes difficult to select the correct information. Sometimes you may be confused.
6. WASTAGE OF TIMES
A lot of time is wasted to collect the information on the internet. Some people waste a lot of time in chatting or to play games. At home and offices, most of the people use internet without any positive purpose.
7. ENGLISH LANGUAGE PROBLEMS
Most of the information on the internet is available in English language. So, some people cannot avail the facility of internet.
16 | P a g e
HOW TO CREATE EMAIL
Electronic mail, commonly called email or e-mail, is a method of exchanging digital messages from an author to one or more recipients. Modern email operates across the Internet or other computer networks. Some early email systems required that the author and the recipient both be online at the same time, a la instant messaging. Today's email systems are based on a storeand-forward model. Email servers accept, forward, deliver and store messages. Neither the users nor their computers are required to be online simultaneously; they need connect only briefly, typically to an email server, for as long as it takes to send or receive messages. An email message consists of three components, the message envelope, the message header, and the message body. The message header contains control information, including, minimally, an originator's email address and one or more recipient addresses. Usually descriptive information is also added, such as a subject header field and a message submission date/time stamp.
Step:1 Left mouse click the icon to open a New Email Window Step:2 Note three main areas first: a place for an email address, 2nd: a place to write a subject of your email and 3rd: an area to place your message, picture, jokes, links to web pages and more. Step:3 Address your mail to a contact last, because that way you can¶t accidentally send it before it¶s finished (it happens with new users).
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Step:4 Fill in text in the box pertaining to the email theme. You should always put a subject to let the person receiving the email know what is contained in the email you are sending. Step:5 Type in your message into the mail body of the email. The area for typing works just like a Word Processor program. Complete your message and it¶s now ready to address and send (when you learn the basics of email composition, there are countless things you can do when composing and email, like pictures, copy and paste text from the internet or other document, or have fancy background stationery.) Step:6 Type the email address into the box. If the settings are correct, it will auto fill the address with a few keystrokes. A better way is to use the mouse to address emails, but you need to have the addresses in your "Address book". Notice the little book icon just left of the "To" (very small) by the address box. Click on that book icon, and a list of your email addresses will show. Select the email name you want and click the "To:>" to input that email address into a list in the "To" box. If you want to address to more than one contact, repeat as many times as required; each time select the name and then click ³To:>". When all contacts are completed, click . Step:7 Send your email. The left icon is the icon; click on this icon and your mail is on the way to a huge server run by an Internet Service Provider (ISP) somewhere in the world and is ready for your contact to retrieve next time they are using their email program eg. Outlook Express or Hotmail.
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CONCLUSION
Internet/WWW
y y y y y
provides access to a global information system makes it possible for many to access makes it easy to publish information presents some serious legal issues is impossible to manage centrally
Future
y y y
More growth Increased commercial activity Increasing amounts of change
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BIBLIOGRAPHY
www. Wikipedia.com www. Worldweb.edu
book of prof. lalwani
THANK YOU
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doc_178476605.docx