把东西南北方向的红绿黄灯编号，然后在软件当中把灯亮时的状态设为“1”，灯灭时的状态设为“0”。第几个灯亮，就在第几位用二进制的1表示，所以以上提的状态都以这个思路来表示。之后把每一个状态的二进制转换为十六进制。因此用十六进制来表示每一个状态。-Things red, green and yellow Number of north-south direction, and then the software which lights when the state is set to " 1" , the status is set to " 0"　when the lights were. A few lights, several binary, so the above-mentioned state this idea. After each state binary to hexadecimal. Hexadecimal to represent each state.