#includereg52.h>unsignedcharflag;//波型输出标置变量bittime;unsignedcharsin(unsignedcharx){unsignedcharcod
includereg52h>unsignedcharflag=0,a;voiddelay(){unsignedchari,j;for(i=0;i100;i++)for(j=0;j100;j++)
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