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    How many keys are there on a keyboard?

                                                                                          21 st
                                                                                        Century   #Initiative
                                                                                          Skills
                           “Working on the computer for long hours is not good for your health.
                           Always take breaks at regular intervals while working on the computer.”

                      CPU

                      The CPU is the most important part of a computer.
                      It is also known as the brain of a computer. The CPU
                      box/cabinet contains the Central Processing Unit

                      or, CPU.

                                   MOUSE                                                       CPU      CPU box/cabinet

                                   A computer mouse is called so because it is shaped like a mouse.

                                   The cable attached to it looks like its tail. It has two buttons and a
                                   scroll wheel between these buttons.

                                                                                                          PURE
                              In 1833, Charles Babbage laid the foundation of all the parts that
                              are now used in modern computers.                                           FACT

                                ADDITIONAL PARTS OF A COMPUTER

                      Let us learn about some additional parts of a computer.

                      SPEAKERS

                      Speakers  are attached  to  a computer.  You  can listen  to
                      sounds and music on it.

                                                PRINTER

                                                A printer is used  to  take  a printout  of the work done.
                                                A printer can print both black and white and coloured

                                                pictures and documents.

                       22   Premium Edition-I

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