light emitting diode (LED)

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Electronic device that emits light when electric current flows through it. Older LEDs were made from semiconductor material such as gallium arsenide and produced only a few colors (mainly red or green). Newer LEDs are made from synthetic materials such as p-phenylenevinyl and can produce light of any color. LED-based lighting bulbs that consume little current and last for decades are under development.

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The light emitting diode was really cool to me and my friend and I wondered how to make one on my own.
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The light emitting diode technology was used for the display as our engineers recommended this to be best for the project.
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You need to know if something has a light emitting diode if you are supposed to be storing something else in a dark place.
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