LED stands for
ایل ای ڈی کا مطلب ہے۔
- lift emitting diode
- light emitting diode
- light emitting disk
- None
Explanation
A Light Emitting Diode (LED)
A light-emitting diode is a semiconductor device that emits light when current flows through it
LED lighting products produce light up to 90%
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Invented:
H. J. Round (1907);
Oleg Losev (1927);
James R. Biard (1961);
Nick Holonyak (1962)
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First production: October 1962
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VU FIA CBT 14-12-2021
ND5-5-2023
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