File list (Check if you may need any files):
4X4 Keys\16K1\16K1.dep
........\....\16K1.ewd
........\....\16K1.ewp
........\....\16K1.eww
........\....\16K1实验.pdf
........\....\Backup (2) of 16K1.ewd
........\....\Backup (2) of 16K1.ewp
........\....\Backup of 16K1.ewd
........\....\Backup of 16K1.ewp
........\....\Debug\Exe\16K1.d43
........\....\.....\...\16K1.txt
........\....\.....\Obj\16K1.pbd
........\....\.....\...\main.r43
........\....\gdata.h
........\....\Keypad.c
........\....\Keypad.h
........\....\main.c
........\....\settings\16K1.cspy.bat
........\....\........\16K1.dbgdt
........\....\........\16K1.dni
........\....\........\16K1.wsdt
........\...2\16K2.dep
........\....\16K2.ewd
........\....\16K2.ewp
........\....\16K2.eww
........\....\16K2实验.pdf
........\....\Backup (2) of 16K2.ewd
........\....\Backup (2) of 16K2.ewp
........\....\Backup of 16K2.ewd
........\....\Backup of 16K2.ewp
........\....\cry1602.c
........\....\cry1602.h
........\....\Debug\Exe\16K2.d43
........\....\.....\...\16K2.txt
........\....\.....\Obj\16K2.pbd
........\....\.....\...\main.r43
........\....\Keypad.c
........\....\Keypad.h
........\....\main.c
........\....\settings\16K2.cspy.bat
........\....\........\16K2.dbgdt
........\....\........\16K2.dni
........\....\........\16K2.wsdt
........\...1\Debug\Exe
........\....\.....\List
........\....\.....\Obj
........\...2\Debug\Exe
........\....\.....\List
........\....\.....\Obj
........\...1\Debug
........\....\settings
........\...2\Debug
........\....\settings
........\16K1
........\16K2
4X4 Keys