51 SCM keyboard scanning procedure, when a keyboard is that the LED will show that but buzzer will issue corresponding beep.

Packet : 117143170evsdiskey.rar filelist
Evsdiskey\array.c
Evsdiskey\array.h
Evsdiskey\array.lst
Evsdiskey\array.obj
Evsdiskey\back up.txt
Evsdiskey\diskey
Evsdiskey\diskey.c
Evsdiskey\diskey.hex
Evsdiskey\diskey.LST
Evsdiskey\diskey.M51
Evsdiskey\diskey.OBJ
Evsdiskey\diskey.Opt
Evsdiskey\diskey.ORC
Evsdiskey\diskey.plg
Evsdiskey\diskey.Uv2
Evsdiskey\diskey_Opt.Bak
Evsdiskey\diskey_Uv2.Bak
Evsdiskey\dpy.c
Evsdiskey\dpy.h
Evsdiskey\dpy.LST
Evsdiskey\dpy.OBJ
Evsdiskey\general.h
Evsdiskey\key.c
Evsdiskey\key.h
Evsdiskey\key.LST
Evsdiskey\key.OBJ
Evsdiskey\music.c
Evsdiskey\music.h
Evsdiskey\music.lst
Evsdiskey\music.obj
Evsdiskey\music_code.c
Evsdiskey\music_code.h
Evsdiskey\music_code.LST
Evsdiskey\music_code.OBJ
Evsdiskey\STARTUP.A51
Evsdiskey\sys12M.c
Evsdiskey\sys12M.h
Evsdiskey\sys12M.LST
Evsdiskey\sys12M.OBJ
Evsdiskey

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