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The computer mouse was invented by Douglas Engelbart.
                    The first mouse  was a wooden mouse.







                 Right-click

                 Pressing and releasing the right button once is called right-click. It displays a list
                 of options of the selected item called a pop-up or shortcut menu.












                                                     click












                                          Right-click

                 Scroll


                 A computer mouse has a wheel in between the right button                           up
                 and the left button. This is known as the scroll wheel.
                                                                                                 down
                 You need to place your index finger on the scroll wheel and
                 roll it upwards or downwards to move the page down or up.

                 Drag and Drop

                 Drag means to move the mouse while keeping the mouse
                 button pressed. It is used to move an item to another location                      Scroll Wheel
                 on the computer.

                 Drop means to release the mouse button.

                 Drag and drop is a very useful action. It can be used to move objects on the screen
                 quickly.

                                                                                              Computer Mouse       49
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