例5-1矩阵键盘4X4 ................\0406 ................\0406.LST ................\0406.M51 ................\0406.OBJ ................\0406.PWI ................\0406.c ................\0406.dsn ................\0406.hex ................\0406.lnp ................\0406.plg ................\0406.uvgui.Administrator ................\0406.uvopt ................\0406.uvproj ................\0406_uvproj.bak ................\Last Loaded 0406.DBK