Monday, 9 April 2012

Basic Concept Of Computer Network : Definition

COMPUTER NETWORK


A computer network is a system of interconnected computers and peripheral devices. For example, it may connect computers, printers, scanners and cameras.
 
COMMUNICATIONS
Communications is about the transfer of information from a sender, across a distance, to a receiver.
The information that is transmitted (sent) can be text, voice, sound, video, graphics and images, or a combination of all these, which we call multimedia.
Computers communicate with digital signals. The older forms of communications technology, such as telephones and radios, use analog signals.

The MODEM, which is short for modulator or demodulator, converts digital signals into analog and back again into digital signals for information to move across the telephone line. 

IMPORTANCE OF NETWORKS AND COMMUNICATIONS 

E-Business
E-business or electronic business refers to conducting business transactions on the internet, not only limited to buying and selling but also servicing customers and collaborating with business partners.

E-business supports many types of business transactions, including online shopping, selling and renting. Users can browse the website and choose from the list of items or services to buy. Payment is usually via credit card.

Online Education
With a network connections, online education is made possible. Students at any location around the world can participate in an online classroom, download tutorial questions and submit their assignments.

E-Banking
E-banking or electronic banking is the most popular banking facility nowadays. It handles all types of banking transactions like account management, fund transfer and payments primarily over the internet.

User can pay bills, check the account balance and transfer money to other parties, using e-banking facilities twenty four hours a day and seven days a week.

With e-banking, most of the transactions can be done at home or from the office, thus users save time on traveling and queuing at the bank counters.

Long Distance Communication
Long distance communication is made easy via network availability. Communication is possible via voice, text or video. The cost of having this type of communication is cheaper than making a normal phone call and definitely faster and more effective than corresponding via letters of fax.

In business, important decisions can effectively made through video conference meeting.
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2 comments:

  1. The basic detail about computer network and its definition is clear and easy to follow. I am grateful to you for explaining each point in such a simple way. Thank a lot for this informative article.
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