要从端口1234H中读入8位数据,其指令应是（)AMOV DX,1234H OUT DX,ALBIN AX,1234HCMOV DX,1234H

要从端口1234H中读入8位数据,其指令应是()

AMOV DX,1234H OUT DX,AL

BIN AX,1234H

CMOV DX,1234H IN AL,DX

DOUT DX,1234H