A mouse is an important part of the computer.a mouse generally has three buttons: left button center button or scroll wheel .right button.the mouse is a very important activity.wireless mouse is becoming popular as it is cordless and can be operated from a distance.the mouse properly and bring the mouse pointer on the computer item and click the left mouse button.dragging and dropping is also an important activity of a mouse .dragging is also used to select text on the screen.the arrow on the moniter is called the mouse pointer.