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Sticky Note
LED stands for _____?
ایل ای ڈی کا مطلب ہے؟
  1. Light Emitting Diode
  2. Laser Emitting Device
  3. Low Energy Device
  4. Liquid Emitting Display
Explanation
  • LED (Light Emitting Diode) is a semiconductor device that emits light when electric current passes through it.
  • It is widely used in lighting, displays, electronic indicators, and screens.

Additional information:

  • Energy efficiency: Up to 90% more efficient than traditional bulbs
    First discovery: H. J. Round – 1907
    Early research: Oleg Losev – 1927
    Practical LED development: James R. Biard – 1961
    First commercial production: October 1962 (Nick Holonyak)

    Last verified on 12-03-2026

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