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Light-emitting diode - Wikipedia
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Light-emitting diode - Wikipedia
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Light Emitting Diode Basics | LED Types, Colors and Applications
Light Emitting Diode Basics | LED Types, Colors and Applications
Light-emitting diode - Wikipedia
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the history of LED lighting - energy saving lighting
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History of LED - Development of Light-Emitting Diodes
Pure red LEDs fulfill a primary goal
