8线-3线优先编码器，当输入引脚<img src="https://static.zxtiku.com/wangke/imgs/topic/9ad33daab2ac84526e1529c2619955ca.png"/>时对应的编码<img src="https://static.zxtiku.com/wangke/imgs/topic/b843759215160754e95f136eae6983b9.png"/>输出为110