A yau, ana amfani da ledoji sosai, amma diode na farko da ke fitar da haske an ƙirƙira shi ne shekaru 50 da suka gabata ta hanyar wani ma’aikacin Janar Electric. Ƙwararrun LEDs ya bayyana nan da nan, saboda sun kasance ƙanana, dorewa, da haske. LEDs kuma sun cinye ƙasa da makamashi fiye da kwararan fitila. A cikin shekaru, fasahar LED ...
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