A dot matrix LED is a display device used to display information on machines, stock market, stadiums, bank, train and bus station display panels and many other devices requiring a simple display device of limited resolution.

The display consists of a dot matrix of lights or mechanical indicators arranged in a rectangular configuration such that by switching on or off selected lights, text or graphics can be displayed. A dot matrix controller converts instructions from a processor into signals which turns on or off lights in the matrix so that the required display is produced.

Dot matrix LED Displays are offered in a variety of array configuration packages such as 5*7, 5*8, 8*8, 16*16 and 32*16 options, and color choices include green, red, yellow, white, blue, orange, Bi-Color and RGB.