Nubwoko bushya bwamatara, LED (Light Emitting Diode) ifite ibyiza byo gukoresha ingufu nyinshi, kuramba, namabara meza, kandi biramenyekana cyane mubantu. Ariko, kubera ibiranga umubiri wa LED ubwayo hamwe nuburyo bwo gukora, ubukana bwurumuri ...
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