89c54 MCU with 32 keys keyboard scanning procedures.

KEY-89c54
.........\C51.H
.........\cni
.........\cni.hex
.........\cni.lnp
.........\cni.M51
.........\cni.Opt
.........\cni.plg
.........\cni.Uv2
.........\cni_Opt.Bak
.........\cni_Uv2.Bak
.........\hexbin2.exe
.........\INIT.ASM
.........\INIT.LST
.........\INIT.OBJ
.........\IRQ.C
.........\IRQ.H
.........\IRQ.LST
.........\IRQ.OBJ
.........\key.c
.........\Key.h
.........\key.LST
.........\key.OBJ
.........\MAIN.C
.........\MAIN.H
.........\MAIN.LST
.........\MAIN.OBJ
.........\public.C
.........\PUBLIC.H
.........\public.LST
.........\public.OBJ
.........\STARTUP.ASM
.........\STARTUP.LST
.........\STARTUP.OBJ
.........\uart.h

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