Mouse

 A mouse is a hand-held pointing device that allows us to control our computer without having to type instructions from the keyboard. A mouse is normally a rectangular shaped device, with a rubber ball embedded in its lower side and buttons on top.

* On the screen the mouse is indicated as an arrow. Moving the mouse in any direction on the mouse pad, moves the arrow in that direction on the screen.

* Sometimes the mouse pointer is indicated on the screen in the form of an I shaped mouse pointer. When you click the left mouse button at any point on the screen , a blinking cursor gets displayed on the screen.

* Pressing the left mouse button once and releasing it, is called 'Click'. It is used to activate certain function on the screen, such as pulling down menus, highlighting commands etc.,

* Doing two quick click is termed as a 'Double-click' and this operation is used to open windows, execute programs and menus.

* The hourglass symbol on the screen indicates that the system is processing data. we must wait until it becomes an arrow again.