Nearly everything we do in the world is helped, or even controlled by
computers. Computers are used more and more often in the world today
because they are far more efficient than human beings. They have much
better memory and can store a huge amount of information.
Just as television has extended human sight across the barriers of time
and distance, so the computers extend the power of the human mind across
the existing barriers.
Ordinary computer can remember only the data stored in hard disk. Now
scientists have designed machines which are capable to learn from
experience and remember what they have learnt. Such a machine is capable
to recognize objects without human help or control.
The Internet is a global collection of different type computer networks
that are linked together. Some refer to the Internet as the information
superhighway. The Internet enables a person to exchange information with
other computer users from anyplace of the world. The final destination
may be in a different cities or countries.
It also offers a rapidly growing collection of information, with topics
ranging from medicine to science and technology. It features exhaustive
material about arts as well as research material for students and
coverage of recreation, entertainment, sports, shopping, and employment
opportunities. The Internet provides access to almanacs, dictionaries,
encyclopedias, and maps.
A common resource provided by the Internet is a worldwide system for
sending and receiving electronic mail, known as E-mail. Unlike the
regular mail, E-mail often reaches its destination, even on other
continents, in minutes or less.
There are, however, some disturbing aspects to consider. Study of the
social and psychological effects of Internet showed that
Internet-addicted people experience higher levels of depression and
lowliness than those people who use the computer network less
frequently. Researchers found that using of computer and Internet causes
a decline in psychological well-being.
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