Description: Based on SCM IO of a keyboard scan function, use, in order to reduce AT89S52 control using IO mouth to reduce pressure diodes using single-chip IO of the mouth
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3个IO口的键盘
.............\3个IO口的键盘
.............\3个IO口的键盘.lnp
.............\3个IO口的键盘.M51
.............\3个IO口的键盘.Opt
.............\3个IO口的键盘.plg
.............\3个IO口的键盘.Uv2
.............\3个IO口的键盘_Opt.Bak
.............\3个IO口的键盘_Uv2.Bak
.............\STARTUP.A51
.............\STARTUP.lst
.............\ThreeIO.c
.............\ThreeIO.h
.............\ThreeIO.LST
.............\ThreeIO.OBJ
.............\资料
.............\....\3个IO口的4×4键盘电路.pdf
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