File list (Check if you may need any files):
electronic lock design
......................\ch24_1
......................\ch24_1.c
......................\ch24_1.hex
......................\ch24_1.LST
......................\ch24_1.M51
......................\ch24_1.OBJ
......................\ch24_1.Opt
......................\ch24_1.plg
......................\ch24_1.Uv2
......................\ch24_1_Opt.Bak
......................\ch24_1_Uv2.Bak
......................\I2C_drive.h
......................\LCD_drive.h