Page 10 - PlugGPT_V2.0_C3_Flipbook
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Some of the input devices are keyboard, mouse and scanner.














                                Keyboard                                    Mouse                       Scanner



                  Process

                  The computer  takes action  on the data entered

                  by  the  user.  It converts  the  data  into meaningful
                  information with the help of the processor which is
                  the CPU (Central Processing Unit). This conversion
                  of data into information is called processing. CPU
                  is also called the brain of the computer. It has three

                  parts:                                                                     CPU
                                                                                                         CPU box
                  Arithmetic Logic Unit (ALU)

                  The  ALU does arithmetic calculations  like addition,  subtraction,  multiplication,

                  division and so on. It also does comparisons like greater than, lesser than, equal to
                  and so on.


                  Memory Unit (MU)

                  The MU stores data and instructions given to the computer and the result of the
                  processing.

                  Control Unit (CU)


                  The  CU coordinates between all the parts of the CPU. The CU gets data  and
                  instructions from the memory unit and passes them on to the ALU in a step by
                  step manner.


                  Output

                  The result which we get after processing the data and instructions is called output.
                  The output which is displayed on the screen of a monitor is called the soft copy. A

                  printout of the soft copy on paper is called the hard copy.




                8       Premium Edition-III
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