【实验7】多路开关状态指示\zhishi .........................\zhishi.c .........................\zhishi.hex .........................\zhishi.lnp .........................\zhishi.LST .........................\zhishi.M51 .........................\zhishi.OBJ .........................\zhishi.Opt .........................\zhishi.plg .........................\zhishi.Uv2 .........................\zhishi_Opt.Bak .........................\zhishi_Uv2.Bak 【实验7】多路开关状态指示