51 single-chip control 8255 8253,74hc138 achieve light traffic lights and the other wave of the two frequency

单片机实验最终程序
..................\51单片机课程实验.plg
..................\51单片机课程实验.uvopt
..................\51单片机课程实验.uvproj
..................\51单片机课程实验_uvopt.bak
..................\51单片机课程实验_uvproj.bak
..................\ch
..................\..\8253.c
..................\..\8253.h
..................\..\8255.c
..................\..\8255.h
..................\..\GongYong_HanShu.c
..................\..\GongYong_HanShu.h
..................\..\liushuideng.c
..................\..\liushuideng.h
..................\..\main.c
..................\..\PaoMa_Deng.c
..................\..\PaoMa_Deng.h
..................\list
..................\....\51单片机课程实验.m51
..................\....\8253.lst
..................\....\8255.lst
..................\....\GongYong_HanShu.lst
..................\....\liushuideng.lst
..................\....\main.lst
..................\....\PaoMa_Deng.lst
..................\....\STARTUP.lst
..................\output
..................\......\51单片机课程实验
..................\......\51单片机课程实验.hex
..................\......\51单片机课程实验.lnp
..................\......\51单片机课程实验.plg
..................\......\8253.obj
..................\......\8255.obj
..................\......\GongYong_HanShu.obj
..................\......\liushuideng.obj
..................\......\main.obj
..................\......\PaoMa_Deng.obj
..................\......\STARTUP.obj
..................\STARTUP.A51

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