What is LED (light-emitting diode)?
Submitted by: MuhammadA light-emitting diode (LED) is a semiconductor device that emits visible light when an electric current passes through it. The light is not particularly bright, but in most LEDs it is monochromatic, occurring at a single wavelength.
Submitted by: Muhammad
Submitted by: Muhammad
Read Online Basic Information Technology Job Interview Questions And Answers
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