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                        A computer is an electronic machine which helps us to solve many
                        problems.
                        A computer can do a lot of things better than a human.

                         A computer is useful to us and can do a lot of jobs.

                         A computer is available in different types and sizes.
                         Desktop, laptop, tablet and smartphone are different types of computers.

                         Input is giving instructions to the computer in the form of numbers, letters
                        or symbols.

                         The computer performs action on the input with the help of CPU.
                         Output is the result after processing.






                                                          Checkpoint




                  A.  Tick ( ) the correct option.

                        1.   A computer cannot .....................................


                             a.  Do calculations                              b.  Save work

                             c.  Think                                        d.  Store data

                        2.   The full form of PC is .................................... computer.


                             a.  Private                                      b.  Personal

                             c.  Public                                       d.  Portable


                        3.   Which of the following performs action on the input with the help of
                             CPU?

                             a.  Computer                                     b.  Printer


                             c.  Mouse                                        d.  Keyboard

                        4.   Which of the following is an input device?

                             a.  Keyboard                                     b.  Monitor


                             c.  Printer                                      d.  CPU


               14       Plus (Ver. 3.2)-II
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