A.XX01001101010010 B.XXXX001101010010 C.XX10001101010010 D.XXXXXX0101100000
A.0,0 B.0,1 C.1,1 D.1
A.清0,預(yù)設(shè)值TV B.清0,當(dāng)前值 C.保持不變,預(yù)設(shè)值TV D.保持不變,當(dāng)前值