| A | B |
|---|
| Modem | communicates with other computers over telephone lines or networks. |
| Input | is the first stage in the operation of a computer. |
| Trackball/Touchpad | is used instead of a mouse on a laptop or notebook computer. |
| Joysticks | are commonly used for computer games |
| Keyboards | are the main input device |
| Scanners | are devices that chnge images into codes for the computer to understand |
| Microphone | translates sound into electric current, which the computer digitizes |
| Voice activaton software | uses a microphone to speak commands into the computer and enter text |
| Touch Screen | enables the user to select options directly on the screen using pen based device or a finger |
| Sholes/QWERTY | most common type of keyboard |
| Dvorak keyboard | allows a typer to type faster than the QWERTY keyboard |
