数码管显示矩形键盘按键
......................\shu
......................\shu.c
......................\shu.hex
......................\shu.lnp
......................\shu.LST
......................\shu.M51
......................\shu.OBJ
......................\shu.Opt
......................\shu.plg
......................\shu.Uv2
......................\shu_Opt.Bak
......................\shu_Uv2.Bak