1. Gịnị bụ LED, LCD? LED na-anọchite anya Light-Emitting Diode, ngwaọrụ semiconductor nke sitere na ogige nwere ihe ndị dị ka Gallium (Ga), Arsenic (As), Phosphorus (P), na Nitrogen (N). Mgbe electrons na-ejikọta ya na oghere, ha na-ebunye ìhè a na-ahụ anya, na-eme ka LEDs na-arụ ọrụ nke ọma na ntụgharị ele ...
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