cac ban nen thiet ke nhu sau: dung 16 con transistor B772 de dem cho 16 hang. De dem cot thi ban nen dung UNL2803 (dem dao). la ok .Dam bao led dat do sang . Co gi thac mac thi lien lac qua mail cua minh. Loi khuyen cho cac ban khong dung 74154 vi con nay toi 15000d, cac ban nen thay bang 2 con 74138 cho no kinh te 1 con khoang 3500d.
Mail : "vanle.lexus.0904@gmail.com"[/QUOTE]
"minh go co dau khong hien thi duoc nen minh moi go khong dau. thong cam nhe"
Mail : "vanle.lexus.0904@gmail.com"[/QUOTE]
"minh go co dau khong hien thi duoc nen minh moi go khong dau. thong cam nhe"
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