Description: 51 4* 4 matrix keyboard microcontroller, control digital control, buzzer alarm, have been successful experiments.
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key\key
...\key.c
...\key.hex
...\key.LST
...\key.M51
...\key.OBJ
...\key.Opt
...\key.plg
...\key.Uv2
...\key_Uv2.Bak
key
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