单项选择题
A.余3码B.循环码C.格雷码D.8421码
A.(1101011.001)2 B.(01101010.01)2 C.(11101011.01)2 D.(01100111.01)2
A.(0110110.101)8421BCD B.(0011110.1110)8421BCD C.(00110110.0111)8421BCD D.(110110.111)8421BCD