photo.jpg

## Typical Input Devices ### The Pointing Stick Mouse The pointing stick mouse is found on laptop computers and looks like a pencil eraser. It protrudes from the keyboard between the B, G and H keys. Pushing on the pointing stick with your finger moves the pointer around the screen. Buttons placed...

## Typical Input Devices ### The Pointing Stick Mouse The pointing stick mouse is found on laptop computers and looks like a pencil eraser. It protrudes from the keyboard between the B, G and H keys. Pushing on the pointing stick with your finger moves the pointer around the screen. Buttons placed close by allow you to select features on the screen. ### The Touchpad Mouse The touchpad mouse contains a touch-sensitive pad and is usually found on laptops. The pad is a pressure- and motion-sensitive flat surface of about 5 cm x 5 cm, over which you move your fingers to control the cursor or pointer on the screen. Buttons placed close to this surface allow you to select features on the screen. ### The Eye-Controlled Mouse The eye-controlled mouse allows users with disabilities to use computers through eye movements. The user wears glasses or special equipment to carry out a command. The user looks at an icon and blinks once to select the command. ### Joysticks A joystick is a device that lets you control the movement of an object on the screen by operating a small lever. This device is used mainly for computer games such as flight simulators. ### Digitising Tablets (graphics tablet) To digitise data means to convert it from an analogue form (like a picture) to a digital form. A **digitising tablet** is a board that can detect the position of a pointing device, such as a **stylus** or a **puck**, on its surface. A **stylus** is a pen-like pointing device for a graphics/ digitising tablet. A **puck** is a mouse-like device that is moved over the surface of the tablet. It has cross-hairs to position it accurately and a number of buttons for different actions. You can easily enter drawings and sketches onto the computer using the digitising tablet.