Based on AT89C51, use 3*3 keyboard to deal with timing problems

键盘启动计数 5位数码管显示\55
键盘启动计数 5位数码管显示\55.c
键盘启动计数 5位数码管显示\55.DSN
键盘启动计数 5位数码管显示\55.hex
键盘启动计数 5位数码管显示\55.lnp
键盘启动计数 5位数码管显示\55.LST
键盘启动计数 5位数码管显示\55.M51
键盘启动计数 5位数码管显示\55.OBJ
键盘启动计数 5位数码管显示\55.plg
键盘启动计数 5位数码管显示\55.PWI
键盘启动计数 5位数码管显示\55.uvopt
键盘启动计数 5位数码管显示\55.uvproj
键盘启动计数 5位数码管显示\55_uvopt.bak
键盘启动计数 5位数码管显示\55_uvproj.bak
键盘启动计数 5位数码管显示\Last Loaded 55.DBK
键盘启动计数 5位数码管显示\STARTUP.A51
键盘启动计数 5位数码管显示\STARTUP.LST
键盘启动计数 5位数码管显示\STARTUP.OBJ
键盘启动计数 5位数码管显示

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