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 Computers are tools used to process the data according to procedures that have
       been formulated. Said the computer was originally used to describe
  people who perkerjaannya perform arithmetic calculations, with or without a
     walker, but the word is then transferred to the machine itself. Originally,
    the processing of information is almost exclusively related to arithmetical
      problems, but modern computers are used for many tasks unrelated
                                 to mathematics.

            In the sense that there are tools such as slide rules, mechanical
                     calculators kind of abacus and so on, until all
    of the contemporary electronic computers. The term better suited to a broad
                                 sense as "computer" is
"information processing" or "information processing systems." Over the years there
have been several different meanings in the word "computer", and several different
                         word is now called called a computer.

The word computer once commonly used to define people who perform arithmetic
             calculations, with or without auxiliary engine. According to
the Barnhart Concise Dictionary of Etymology, the word is used in English in 1646 as
          the word for "people who count" and before 1897 is also used as
  a "mechanical calculators." During World War II, the word refers to the workers
     of the United States and British women who work to calculate the path of
                       artillery warfare with the cash register.

       Charles Babbage designed one of the first calculating machine called
    the analytical engine. In addition, a variety of simple machine tools such as
                 the slide rule can also be regarded as a computer.

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