1602液晶显示一个时钟\lesson9.M51 ....................\lesson9.OBJ ....................\lesson9.Opt ....................\lesson9.plg ....................\lesson9.Uv2 ....................\说明.txt ....................\lesson9 ....................\lesson9.c ....................\lesson9.hex ....................\lesson9.lnp ....................\lesson9.LST 1602液晶显示一个时钟