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The three main components of CPU are:
                                                                                          Control
                      ALU (Arithmetic Logic Unit):                                          Unit
                      Performs mathematical and logical                  Input                              Output
                                                                          Unit                                Unit
                      operations.                                                        Arithmetic
                      CU (Control  Unit): Coordinates                                    Logic Unit
                      and controls all the operations of a
                      processor and manages the flow of                                   Memory
                                                                                            Unit
                      data within the CPU.
                                                                                   Functioning of CPU
                      Memory Unit: Stores  data  and
                      instructions temporarily for quick access during processing.

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                     The speed of a CPU is measured in Megahertz. Higher the value, faster is the information
                     processed by the CPU.


                      OUTPUT DEVICES

                  The output devices are used to display the information and result of computation
                  to the user. Some of the output devices are:
                  Monitor


                  The monitor is one of the most familiar output device. It is
                  also called Visual Display Unit (VDU). The images that you
                  see on the monitor are made up of tiny dots called pixels.

                  The clarity of the images depends on the number of dots/
                  pixels on the screen per inch.                                                       Monitor
                  Printer


                  A printer is an output device that allows you to print the work done on the computer
                  on a sheet of paper. The most commonly used types of printers include:



                                                   Dot Matrix Printers: These work similarly to typewriters,
                                                  where the printer head strikes an ink ribbon against the
                                                  paper to create characters.


                     Dot matrix printer

                       Inkjet Printers: These print by spraying tiny droplets of ink
                     onto the paper, typically doing so line by line.


                                                                                                     Inkjet printer

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