GPRS
....\bin
....\...\gprs
....\gprs
....\....\gprs.c
....\....\gprs.h
....\....\main.c
....\....\Makefile
....\....\tty.c
....\....\tty.h
....\keyboard
....\........\get_key.c
....\........\get_key.h
....\........\get_key.o
....\........\kbd_types.h
....\........\kbd_zlg7289.c
....\........\kbd_zlg7289.h
....\........\kbd_zlg7289.o
....\........\keyboard.c
....\........\keyboard.h
....\........\keyboard.o
....\........\Makefile