Description: Single-chip+4* 4 keyboard, hardware schematics and source code, and simulation have been in proteus
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File list (Check if you may need any files):
键盘程序
........\.plg
........\3x4矩阵键盘的扫描程序.c
........\3x4矩阵键盘的扫描程序.LST
........\3x4矩阵键盘的扫描程序.OBJ
........\Last Loaded 键盘(4乘4）.DBK
........\Last Loaded 键盘(load).DBK
........\Last Loaded 键盘.DBK
........\STARTUP.A51
........\STARTUP.LST
........\STARTUP.OBJ
........\简易计算器
........\键盘(4).PWI
........\键盘(4乘4）
........\键盘(4乘4）.DSN
........\键盘(4乘4）.hex
........\键盘(4乘4）.lnp
........\键盘(4乘4）.M51
........\键盘(4乘4）.Opt
........\键盘(4乘4）.plg
........\键盘(4乘4）.PWI
........\键盘(load).DSN
........\键盘(load).PWI
........\键盘.DSN
........\键盘.PWI
........\键盘1.PWI
........\键盘扫描
........\键盘扫描.hex
........\键盘扫描.lnp
........\键盘扫描.M51
........\键盘扫描.Opt
........\键盘扫描.plg
........\键盘扫描.Uv2
........\键盘程序
........\键盘程序(load).Opt
........\键盘程序.c
........\键盘程序.hex
........\键盘程序.lnp
........\键盘程序.LST
........\键盘程序.M51
........\键盘程序.OBJ
........\键盘程序.Opt
........\键盘程序.plg
........\键盘程序.Uv2
........\键盘程序.__i
........\键盘（4乘4）
........\键盘（4乘4）.c
........\键盘（4乘4）.hex
........\键盘（4乘4）.LST
........\键盘（4乘4）.M51
........\键盘（4乘4）.OBJ
........\键盘（4乘4）.Opt
........\键盘（4乘4）.plg
........\键盘（4乘4）.Uv2
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