This is the expansion of 4* 4 keyboard procedures are used ATmega128 development board

扩展4x4键盘输入
...............\key4x4.c
...............\KEY4X4.cof
...............\KEY4X4.dbg
...............\key4x4.dp2
...............\key4x4.h
...............\KEY4X4.hex
...............\key4x4.lis
...............\KEY4X4.lk
...............\KEY4X4.lst
...............\KEY4X4.mak
...............\KEY4X4.mp
...............\key4x4.o
...............\key4x4.prj
...............\key4x4.s
...............\KEY4X4.SRC
...............\key4x4._c
...............\key4x4._h
...............\KEY4X4_cof.aps

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