Semiconductor lasers and light-emitting diodes

半导体激光器和发光二极管

Try running testled, and watch the light-emitting diodes (LEDs) on the BeagleBoard-xM.

尝试运行testled，然后观察BeagleBoard - xM上的发光二极管。

One type of emissive display that already exists is based on organic light-emitting diodes (OLEDs).

目前现有的一种放射性显示屏是基于有机的发光二极管。

Now another new source of lighting, organic light-emitting diodes (OLEDs), is starting to take the spotlight.

现在，灯光的另外一种新来源，绿色发光二极管（OLEDs），闪亮登场。

Each car has a little metal plate which is ten centimeters long, and it blanks out a light-emitting diode.

每辆车有块小金属板，它10厘米长，它有闪光二极管。