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  1. LED Definition & Meaning - Merriam-Webster

    Lead is both a noun and a verb, as most people know. There are several unrelated nouns spelled lead: one most commonly refers to a metal (as in, "The paint was made with lead"), and the …

  2. Light-emitting diode - Wikipedia

    LEDs are transducers of electricity into light. They operate in reverse of photodiodes, which convert light into electricity. The first LED was created by Soviet inventor Oleg Losev [9] in …

  3. What is LED? - Definition, Working, Properties, Uses, Advantages

    A light-emitting diode (LED) is a semiconductor device that emits light when an electric current flows through it. Based on the semiconductor material used and the amount of doping, an LED …

  4. LED | Definition, Light, & Facts | Britannica

    Apr 1, 2025 · LED, in electronics, a semiconductor device that emits infrared or visible light when charged with an electric current. LED displays began to be used for consumer electronic …

  5. Light Emitting Diode (LED): What is it & How Does it Work?

    Feb 24, 2012 · LED Definition: A Light Emitting Diode (LED) is a semiconductor device that emits light when electric current flows through it. Working Principle of LED: The working principle of …

  6. How Light Emitting Diodes Work | HowStuffWorks

    Light emitting diodes, commonly called LEDs, are real unsung heroes in the electronics world. They do many different jobs in all kinds of devices. They form numbers on digital clocks, …

  7. What Is an LED? - How-To Geek

    Aug 11, 2022 · LED stands for "Light-Emitting Diode." The word "diode" is a key component here, because a diode is a semiconductor that only allows electricity to flow in one direction. To …

  8. LED - Light Emitting Diode: Basics, Types and Characteristics

    Sep 20, 2024 · As mentioned in the introduction, an LED is a semiconductor light source. It consists of a PN Junction Diode and when voltage is applied to the LED, electrons and holes …

  9. What is LED? - Construction, Working, Characteristics

    LED (Light Emitting Diode) is an optoelectronic device which works on the principle of electro-luminance. Electro-luminance is the property of the material to convert electrical energy into …

  10. Light Emitting Diode (LED): Principle, Advantages, and Uses

    Dec 3, 2024 · A light-emitting diode (LED) is a small electronic device that emits light when an electric current flows through it. LED works by passing electricity through a semiconductor, …

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