- What's LED (Light Emitting Diode)
- LED's are special diodes that emit light when connected in a circuit. They are frequently used as "pilot" lights in electronic appliances to indicate whether the circuit is closed or not. A a clear (or often colored) epoxy case...
- HISTORY OF THE L.E.D.
- The first commercially usable LEDs were developed in the 1960¡¯s by combining three primary elements: gallium, arsenic and phosphorus (GaAsP) to obtain a 655nm red light source. Although the luminous intensity was very low with brightnes...
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