LED And OLED History Will Remember The Lesson

We know many Light Emitting Diodes and Organic Emitting Diodes (LED and OLED) can be found on any traffic signals or brake lights on cars, buses, or truck types. However, we forgot the history of LED and OLED. To learn about LED and OLED, we watch the conversation with Nick Holonyak, the Inventor of LED on the video I found:

For the history of LED and OLED, you can learn them on:

 

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