These days every single person is known with the word-computer. We can find computers at everywhere around us. In
fact modern world will be incomplete without computers and their applications. It’s almost impossible to even imagine
the modern facilities without the use of computers. For many individuals computer means PC, on which they can see
movies, play games, prepare office sheets and manage daily planners. But this is just a page of the book of computers.
Computer means much more than a PC. A computer can simply be defined as a machine which takes instructions and
perform computations and operations accordingly. These commanded instructions are known as programs and computers
execute these programs to do an operation. At a time, a set of instructions can be given to a computer to perform several
operations, simultaneously. This feature is a point of distinction for the computers.
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