Using the Mouse Most modern computers have an operating system (such as MS Windows XP) that is a Graphical User Interface or G.U.I. This means that you interact with the computer by using a device called a mouse. A mouse is an input device, just like a keyboard. The mouse needs to sit on a smooth, flat, horizontal surface, preferably on a mouse pad. Mouse pads are usually plastic or fabric coated rubber pads usually about 8 inches by 10 inches. If you are right handed, you should use the mouse with your right hand. Most of the time the mouse will be located on the right side of the computer next to the keyboard. Left handed users might prefer to move the mouse to the left side of the keyboard which makes it easier to use with the left hand. As you slide the mouse across the mouse pad, the computer translates the motion of several rollers inside the mouse into the movements of the mouse pointer across the computer screen. There are two button on the mouse: the left mouse button and the right mouse button. Some mice also have a “scroll wheel” in the center of the mouse between the two buttons. Left (index) Mouse Button This is the one you will use the most. The right hand index finger usually rests here and is used to click this button. Right Mouse Button Usually used to perform special functions. The middle finger or index finger, whichever feels more comfortable to you, rests here and clicks the button. Scroll Wheel Used to move up and down on a page. Thumb Rest Place the thumb of your right hand against the mouse here to steady and control the mouse. Palm Rest Place the palm of your right hand here to help steady and control the mouse. The Left Mouse Button: The left mouse button is the one that you will use for more most of the basic computer functions. The left mouse button is used in the following ways: Click: A click is a single press of the left mouse button. This is generally done when selecting a menu item or moving the blinking cursor in an application such as Microsoft Word to the point in which the cursor was when the button was pressed. Double-Click: A double-click is two presses of the left mouse button in rapid succession. A double-click is necessary to open a program from the Windows desktop. By doubleclicking on one of the icons on the Windows desktop, the program associated with that icon will open. Click and Drag: To drag means to hold down the left mouse button and move the mouse so that the cursor is moved to another location on the screen. For example, if you want to select a line of text, move the mouse pointer to the beginning of the text you want to select, click the left mouse button but keep the button held down instead of releasing it, move (drag) the mouse pointer to the end of the selection, then release the mouse button. The text that you have “selected” will be highlighted. The Right Mouse Button: The right mouse is a context-sensitive shortcut button. This means that it allows you to access certain functions, which vary from program to program, simply by pressing the right mouse button within an application. A right click within a certain application will generally cause a menu to appear next to the mouse cursor. If no menu appears when you click the right mouse button, there is no function available for that application or that specific area of the screen. The menu will contain shortcuts to some of the available functions of that program. The term shortcuts means that the functions available in the right click menu are available else where in the program but they are available via the right click menu for quick and easy access. The only way that the right mouse button works is with a single click. There are no doubleclick associated with the right mouse button and there is no drag function associated with the right mouse button either. Summary of Mouse Clicks • Type of Click Click • How to Perform Click One Click of the left mouse button • When to Use Click To select an image or icon • To move items around the computer’s desktop • To navigate the cursor through a word processing program • Double-click • Two click of the left mouse button • To execute an action such as opening a program • Right-click • One click of the right mouse button • To expose shortcuts in a variety of programs