Si loo badbaadiyo tamarta loona yareeyo isticmaalka, meelo badan ayaa mudnaanta siin doona nalalka waddooyinka ee qorraxda marka la rakibayo nalalka waddooyinka. Marka la barbardhigo nalalka caadiga ah ee waddooyinka, nalalka cadceedda ayaa noo iftiiminaya...
Tuulooyin badan ayaa ku adkaata in ay doortaan sifooyinka nalalka waddooyinka ee LED, sida dhererka tirarka iftiinka iyo awoodda nalalka LED. Qaar ka mid ah su'aalaha xirfadlayaasha ah ee ku lug leh waa rea ...