Glossary of Terms

Mice & Trackballs

Keyword Definition
DPI Dots per inch; a measure of the sensitivity of an input device.
Ergonomics The study of people's efficiency in their working environment, relevant in designing input devices.
Mouse A handheld input device that allows for the control of a pointer on a display screen.
Precision The degree of accuracy that an input device can achieve in moving the cursor.
Sensitivity The responsiveness of an input device to user movements.
Trackball An input device controlled by rotating a ball that moves the cursor on the screen.
Trackpad A touch-sensitive surface that allows for finger movements to control the cursor.