说明：  LCD12864液晶显示实时操作内容与提示；同时加入了指纹识别功能，能够通过管理密码进入进行添加和删除指纹信息
(LCD12864 liquid crystal displays real-time operation content and prompts; at the same time, a fingerprint recognition function is added, which can add and delete fingerprint information through the management password.)