CAC ANH CHI CHO E HOI :dung icat89s52 dieu khien led , neu dung 1 chan dieu khien nhieu hon 1 con led thi nen mac chung song song hay noi tiep , va khi dong giam hoac ap giam thi dung tran khuyech dai nhu the nao ? anh chi nao co hinh anh minh hoa thi cang tot!
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