89C51单片机和1602做的简易计算器.doc 时钟 ....\1602.DSN ....\1602.PWI ....\Last Loaded 1602.DBK ....\shizhong ....\shizhong.c ....\shizhong.hex ....\shizhong.lnp ....\shizhong.LST ....\shizhong.M51 ....\shizhong.OBJ ....\shizhong.Opt ....\shizhong.plg ....\shizhong.Uv2 ....\shizhong_Opt.Bak ....\shizhong_Uv2.Bak