A display device is an output device that shows information in a visual form. Some displays show information for people with vision problems through touch, like Braille displays for blind people.
Common uses for electronic displays are television sets and computer monitors.
The following are the most common types of display devices:
Some displays can show only numbers or alphanumeric characters. They are called segment displays because they have parts (segments) that turn on and off to make the needed shapes. Segment displays are commonly used in digital watches and pocket calculators.