Computer is one of the greatest inventions of modern science. It is a device that works like a human brain. That is why, it is also called the 'electronic brain'. It stores information, analyses it and produces information as required from the data. There are five major components in a computer. They are the input unit, the output unit, the memory unit, the control unit and arithmetic unit. A computer can be opened, operated and shut down with the help of a mouse. All complicated tasks can be done easily in a very short time with the help of a computer. The internet is a computer based communication system. The internet has become very popular worldwide as it provides information, communication and recreation instantly. Computer is immensely beneficial though it has some demerits too. It becomes an addiction to some users. Many prefer spending more time with a computer to doing outdoor activities. But in this age of globalization we cannot do without a computer.
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