实验5：矩阵键盘4转独立键盘实验
..............................\key441
..............................\......\Debug
..............................\......\.....\Exe
..............................\......\.....\...\key41.d43
..............................\......\.....\List
..............................\......\.....\Obj
..............................\......\.....\...\key41.pbd
..............................\......\.....\...\main.r43
..............................\......\key41.dep
..............................\......\key41.ewd
..............................\......\key41.ewp
..............................\......\key41.eww
..............................\......\main.c
..............................\......\settings
..............................\......\........\key41.cspy.bat
..............................\......\........\key41.dbgdt
..............................\......\........\key41.dni
..............................\......\........\key41.wsdt