• 2022-05-30
    若(A)=85H,(R7)=43H , (Cy)=1,则依次执行指令“ADD A,R7;DA A ”之后,进位位Cy、累加器A、寄存器R7的内容分别是
    A: (A)=28H,(R7)=43H , (Cy)=1
    B: (A)=85H,(R7)=43H , (Cy)=1
    C: (A)=B8H,(R7)=43H , (Cy)=0
    D: (A)=28H,(R7)=43H , (Cy)=0