4x4 矩阵键盘
............\juzhenjianpan
............\juzhenjianpan.hex
............\juzhenjianpan.lnp
............\juzhenjianpan.M51
............\juzhenjianpan.Opt
............\juzhenjianpan.plg
............\juzhenjianpan.Uv2
............\juzhenjianpan_Opt.Bak
............\juzhenjianpan_Uv2.Bak
............\main.c
............\main.LST
............\main.OBJ
............\STARTUP.A51
............\STARTUP.LST
............\STARTUP.OBJ