| A | B |
|---|
| Input Device | Typically a keyboard or a mouse |
| Keyboard | Allows you to input text and issue commands on a computer. |
| Ergonomic | Designed to fit the natural placement of your hands and may reduce the risk of repetitive-motion injuries. |
| Pointing Device | Controls the pointer - a small arrow or other symbol - on the computer screen. Used to select commands and manipulate text or graphics on the screen. |
| Mouse | The most popular pointing device. You control the pointer by sliding or using the scroll wheel. |
| Trackball | A rolling ball on the top of a mouse. You control the movement of the pointer by moving only the ball (rather than the whole mouse). |
| Touch or track pad | Found on laptops. Detects the motion of your fingers. You can click by tapping this pad. |
| Touch screen | Accepts commands from your fingers. Displays the output simultaneously. Found on ATMs, smartphones and tablets. |
| Microphone | Used to record sound or communicate with others using audio or video conferencing software. |
| Voice-recognition software | Allows you to input data and commands with a microphone. |
| Scanner | A device that captures the image of a photograph or piece of paper and stores it digitally. |
| OCR software | Optical character recognition software, which translates a scanned text document so it can be edited in a word-processing program. |
