Page 20 - TP_Prime_v2.2_Class_3
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Arithmetic Logic Unit (ALU)                                                             CPU
                                                                                                     Memory Unit
                  ALU does all  the arithmetic calculations  like
                  addition, subtraction, multiplication, division, etc.                               Control Unit

                  It also does comparisons like greater than, less

                  than, equal to, etc.                                                           Airthmetic Logic Unit
           Prime (Ver. 2.2)-III  CU coordinates and controls all the parts of the CPU. The CU gets the data and
                  Control Unit (CU)




                  instructions from the memory unit and passes them to the ALU in a step-by-step

                  manner.

                  Memory Unit (MU)

                  The CPU also has a memory like human beings. It stores the data and instructions
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                  that you give to the computer along with the results of the processing.


                   Storage Devices


                  The devices that are used to store data are called Storage devices. There are many

                  storage devices to store our data or work so that we can get it back whenever we
                  need it. Some of the commonly used storage devices are:












                          Hard Disk           Compact Disc (CD)      Digital Versatile Disc           Pen Drive
                                                                              (DVD)


                    IPO Cycle


                  A computer works on the  Input-Process-Output (IPO) cycle. It receives input

                  from the user through input devices, processes it using the CPU and gives back the
                  output using output devices. This cycle is known as IPO cycle.


                                      All the computer hardware attached to it are called peripherals.
                            Fun
                          Fact!       Any device that is attached to and used with a computer, though
                                      not an integral part of it, is called peripheral.
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