chao cac su huynh
anh nao da tung lam DAMH hay biet cach lap trinh VB de xuat ra cong may in vao mach den led 7 doan(2 con) lam on gop y voi minh voi
minh dang gap kho khan khi dung VB ma cac lenh ve outport lai qua kem
dac biet VB lai hoi toi, dang co khac phuc, hy vong kinh nghiem cua moi nguoi se giup ich cho minh

vd: nhu nhap vao so 12(thap phan) tu ban phim thi den led se hien so 12
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