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How useful tool is a computer, unless he knows everyone. People use it for different purposes. One serves as a typewriter, others regard it as a toy, playing different games, and still others use the Internet thanks to him. From the moment when the computer became available to humans, many are asking whether it is friend or foe.

The computer allows you to expand human knowledge and assistance is at work. The computers used by businesses. Through the programs, employees can work faster. Computers connected to the Internet are used in many companies such as trade, exchange of correspondence.

The Internet allows in your home for quick access to information. People use instant messaging and Internet telephony, through which they speak with others, even in remote locations around the world. Recently a very popular option is the use of bank accounts via the Internet and make purchases. The online shop you can buy anything at all.