1.Introduction N'isiokwu a, M ga-enyocha ụfọdụ n'ime isi ihe na-emetụta ndị na-eri nke LED mgbazinye ngosipụta, gụnyere teknuzu nkọwa, ihuenyo size, mgbazinye oge, geographic ọnọdụ, omume ụdị, na ahịa asọmpi na-enyere gị aka ịghọta nke ọma. mgbagwoju anya n'azụ L ...
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