Businesses today have a wide range of uses for computers. This has been a necessity for industry as a way of using their resources more efficiently, as well as a way of reaching a larger group of potential customers. As a result, IT (Information Technology) jobs have been flourishing for some time due to industry’s reliance on computers for their daily operations.

Computer networking

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In the world of computers, networking is the practice of linking two or more computing devices together for the purpose of sharing data. Networks are built with a mix of computer hardware and computer software.

If your business has more than one computer, chances are you could benefit from networking them. A local area network (LAN) connects your company’s computers, allowing them to share and exchange a variety of information. While one computer can be useful on its own, several networked computers can


The “Man of the Year” in 1982 according to a survey carried out by an international magazine was the ‘Computer’. Computer in Latin means “to reckon” or ‘to compute’. Some experts have coined a word for it ‘INFORMATIC’, the science of information processing i.e. methods of recording, manipulation and retrieving information. So it is a calculating device with some special charac­teristics and abilities like—perform complex and repetitive calcula­tions rapidly and accurately, make decisions and automatically correct or modify by providing signals, certain parameters of a system under control, converse with users through terminals etc.

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As we hurtle towards the 21st century, we can use the IRCRC site for online line reservation. we must accept the inevitability of a computer revolution in the near future. It is an-inseparable part of development, as demonstrated by other countries. Computers are no longer luxury or the sole property of the advanced countries. Their appropriate uses in India can help us solve the unique problems of a developing country and bring about the desired changes in increasing literacy, optimizing resources, increasing efficiency, productivity and quality.

Already computers have become such an important part of our lives—in airports, banks, railway stations and every well-equi­pped modern office. As computer continues to proliferate in ever increasing numbers across large segments of Government, business and industry, the common man is beginning to believe hesitantly that computers can actually deliver a good part of the promise that they had offered. Society is gradually accepting the fact that computers will indeed change the manner in which the things are done,



Computers can substantially save valuable man-hours by help­ing people through communication to make reservation of tickets, operate their bank accounts, to pay for electricity water and telephone bills, insurance premium and also do routine shopping. Trains can be operated automatically by computers and traffic signals be computer co-ordinate to produce best traffic patterns, increase reliability and safety and generally provide for more efficient services.



Stock Exchange totally depends of Computer’s.

Stock market is increasingly turning into a casino as superfast computers take over the bulk of trading on the stock market

Such high-frequency trading is more than a technological curiosity. It has become so widespread within the past decade that it represents perhaps half of all stock trades in the United States. That has enormous implications for investors.

Among them:


•Stock markets are operating increasingly like a casino, says economist Harald Malmgren, who researched the topic with Mark Stys, chief investment officer of Bluemont Capital Advisors. The two co-wrote an article for The International Economy, a quarterly journal. In a phone interview, Mr. Malmgren likens computerized traders to operators of slot machines where the profit on one machine is small, but the return on a battery of machines is handsome.

Traditional value investing, by contrast, where brokerage analysts and others study a company’s sales, profits, debts, etc., has become almost “irrelevant,” says Malmgren. “That whole concept of buy-and-hold … stocks is marginalized.”

•Regular buyers and sellers of stock and exchange-traded mutual funds are losing billions of dollars in value, teeny bit by teeny bit, as the computerized traders take advantage of the slightest spreads in buy-sell prices on an individual stock market or between markets.

To a degree, high-frequency trading adds to market “liquidity,” that is, its ability to accept buy-and-sell orders quickly. It also adds to its “efficiency,” which reduces the cost of trades. But what investors gain in efficiency they could more than lose in profits.

•Though computerized trading is not illegal, it has opened the door to more market manipulation, figures Malmgren. The exchanges and the Securities and Exchange Commission do not have the high-powered computers and expertise necessary to detect such manipulative techniques as pushing prices up or down with a rush of orders. “Humans can’t keep track,” says Malmgren.

•The stock market has become more subject to “systemic risk” – the danger of sudden dramatic drops in prices. Malmgren blames the “flash crash” of May 5 on high-frequency trading. Several computerized traders disengaged from the market, leading to an implosion in liquidity – no market for sales. The Dow Jones Industrial Average took a brief plunge of 998 points that day, losing about $1 trillion in value. It regained 543 points of that loss in about 90 seconds.

Malmgren suspects a similar market meltdown will occur in the future, if nothing is done to remedy the perils of high-frequency trading.

One possibility would be a tiny tax on each trade. This would make high-frequency trading more expensive. Orders are usually “immediate or cancel orders” that take less than a second to complete. The tax revenues, Malmgren figures, could be used to improve the capacity of regulators – or help reduce the federal deficit.

But the globalization of stock trading complicates that solution. If high-frequency traders can’t operate in the US, more of the business is likely to move overseas.

Another technique would be to require high-frequency traders to make a market at all times, similar to the requirement for “specialists” on the Big Board. In other words, they would have to be willing to buy specific stocks even when prices are falling. The rule would be “if you play, you must stay,” says Malmgren.

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There are various ways through which computers are widely used in the banking industry. It can be used to carry out from simple to complex tasks of the banks. For example, instead of making manual records and then storing the files, all data is stored on computers. It is more quick and productive. More data can be stored in this way. Moreover, data can be easily stored, and retrieved from computers.

The online banking further gives the evidence of excessive use of computers in banking sectors. Just in a couple of seconds you can retrieve all of your previous transactions in your accounts. Transfer of money can be also made online through these computers. Have you ever noticed that banking sector in the world is moving from traditional banking sector to electronic banking sector. This is possible only through the introduction of computers in banking sector.

Computers have saved the banking industry millions and millions of dollars.  It ultimately allows for greater efficiencies by enabling the banks to phase out legacy “paper” processes for streamlined computerized processes through customized software programming.  The “Check 21″ initiative will save hundreds of millions of dollars a day by eliminated paper check transfers.

-computers don’t make errors (although people do, and sometimes computers have to go on the wrong information)

-computers can make you more money by being more precise about the amount of value transferred than the currency itself is. Eg, if you change from THB to USD, there are numbers after 2 decimal places that the currency can’t track that the bank can then retain as earning. It sounds small, but imagine the number of people in the world who are transferring any money anywhere, and you’ll see that it adds up.

-computers can store more information than an entire library of papers, books, etc. It means that you can consolidate everything, have it in one place, and make it easy to find.

-computers can be networked, allowing you to look up information remotely.

-many more reasons. Is this a textbook question or are you genuinely curious? Computers, although technical, shouldn’t be frightening. Steve Jobs is fond of calling them ‘bicycles for the mind’, and that’s all they are, really- a way of getting mental exercise, and a place to put all your thoughts in an organized matter.

The fact that computers have considerably changed lives of human beings can hardly be denied, because today the majority of us cannot imagine life without them.

Computers make lives of people easier and more comfortable: they give opportunities to millions of people to keep in touch, while being in different parts of the world. Today people drive computerized cars, work for employers from other countries even without seeing them.

There exists also an idea that computer is an electronic brain that people can rely on. Yeah, I agree that computers are irreplaceable for business people and those who need them for work, for students to study and housewives to entertain themselves, but what do you think about using computers by young school boys and girls?

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Personally I believe that their access to computer and the Internet should be limited. I have no objections if from time to time they play various games or chat with their friends online, but often it happens so that children start to search for their homework on the Internet and it becomes a bad habit. Instead of trying to cope with the task using their knowledge or information in textbooks, they prefer to find ready answers. It certainly has negative influence on their progress in studies.


Computers also affect health of young people. First of all, those who spend a lot of time in front of the screens of their computers suffer from lack of physical activity. Such children often have habit scoliosis and problems with their eyes, like glaucoma for instance.

To sum up, I want to emphasize the importance of computers in our day to day life, but I’m sure that if you want to receive benefits from it without harm to your health and activities, you need to use it wisely.