In Keil 4.0 environment, using C language programming matrix keyboard scanning experiment

matrix keyboard experiments (scanning)
......................................\3x3key
......................................\3x3key.LST
......................................\3x3key.M51
......................................\3x3key.OBJ
......................................\3x3key.Opt
......................................\3x3key.Uv2
......................................\3x3key.c
......................................\3x3key.h
......................................\3x3key.hex
......................................\3x3key.lnp
......................................\3x3key.plg

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