| A | B | 
|---|
| input device | allows you to communicate with your computer | 
| bar code reader | a wand or screen that uses a light source to read characters | 
| light pen | used with the computer screen to make selections | 
| scanner | used to place pictures or documentsinto the computer | 
| touch screen | use your fingers to make selections | 
| pointing stick | used on portable computers | 
| microphone | used to record sounds | 
| touch pad | used in place of a mouse (pressure/motion sensitive) | 
| trackball | upside down mouse | 
| keyboard | allows you to type | 
| mouse | hand-held rolling device that allows you to point, click, and drag |