| A | B |
|---|
| Bar Code Scanner | Reads the UPC (Universal Product Code) from packages of almost any product in the stores. |
| Microphone | Changes sound waves to electronic signals that go into the computer. |
| keyboard | The most often used input device. Almost every computer has one. |
| mouse | A desktop input device that we use to 'point, click and drag' icons on the screen. |
| digitizer | An input device that changes a graphic image into number data so that it may be stored and processed by the computer. |
| joystick | an input device often used for video games like "Flight Simulator.' |
| Light Pen | Often used as an input device with older CAD systems. Sensors in the video screen pick up the light at the tip of the pen. |
| headphone | Used to hear sound directly into ears |
| speakers | allows sound to come directly from the computer |
| scanner | takes a picture of a physical object and converts it into digital form |
| printer | creates a hard copy of information |
| modem | enables a computer to access the Internet to download and upload information |
| monitor | displays a soft copy of information |
| touch screen | allows the user to input data and receive data |
