A、<span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 14px">输入映象寄存器</span>
B、<span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 14px">输出映象寄存器</span>
C、<span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 14px">中间寄存器</span>
D、<span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 14px">辅助寄存器</span>