4* 4 keyboard detection procedures, beginners are worth a visit. You could see for himself! Useful things

Packet : 19854787mcukeybord.rar filelist
mcukeybord\kb.c
mcukeybord\kb.hex
mcukeybord\kb.lnp
mcukeybord\kb.LST
mcukeybord\kb.M51
mcukeybord\kb.Opt
mcukeybord\kb.OBJ
mcukeybord\kb.plg
mcukeybord\kb.Uv2
mcukeybord\kb_Opt.Bak
mcukeybord\kb_Uv2.Bak
mcukeybord\STARTUP.A51
mcukeybord\STARTUP.LST
mcukeybord\STARTUP.OBJ
mcukeybord\kb
mcukeybord\kb.__i
mcukeybord

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