Computers are-machines that accept incoming data process them and produce outputs-depending on the users' applications. Present time, we are so much associated with these devices that without them we would not be able to live the way we do. They play a crucial role in everybody's life. They bring a major socio-economic revolution not only in India but also in the whole world itself. From pocket calculators to personal computers (PC), food processors and microchips entering through VCRS at home, their uses are manifolds. The computers are employed to assist men in business organizations, in space and other researches and in many other walks of life. The personal computer (PC) is marching into the office where it is improving productivity by replacing paper works, customer services and job satisfactions for some. Why Computers are used widely?
The computers process information's that come in all shapes and sizes from any fields so accurately that, some people may call these "Informatics"— The Science of Informal ion Processing, i.e. the methods of recording, manipulating and retrieving information's. It may be from a mathematical equation to a company's work-force necessary to produce a payroll or from meteorological department to forecast tomorrow's weather or from space research to project a new space craft. Whatever may be the case, why computers are used widely? The following characteristics that make the computers very popular for its multifarious uses may give the befitting reply. (i) Speed
First, the computers are regarded as high speed calculators. They can process voluminous data within a fraction of second which no human being could do earlier. If we want tomorrow's forecast today, meteorologists can use the computers for necessary calculations and analyses. The units of speed of a computer are the microsecond, the nano (10)-9 second and even the picot second. (ii) Storage
As human brain can store the knowledge in memory and can able to recall it, the...
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