Singlechip subroutine, C source code, 4X4 matrix keyboard, KEIL C development environment.

key4x4_C
........\4X4矩阵键盘C程序
........\................\4X4矩阵键盘C程序
........\................\................\4X4.c
........\................\................\4X4.LST
........\................\................\4X4.OBJ
........\................\................\STARTUP.A51
........\................\................\STARTUP.LST
........\................\................\STARTUP.OBJ
........\................\................\tetrtrew.hex
........\................\................\tetrtrew.lnp
........\................\................\tetrtrew.M51
........\................\................\tetrtrew.Opt
........\................\................\tetrtrew.plg
........\................\................\tetrtrew.Uv2
........\................\................\tetrtrew_Opt.Bak
........\................\................\tetrtrew_Uv2.Bak
........\4X4矩阵键盘C程序.rar

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