#include <reg51.h> main() { P1=0xDE; //二进制:1101 1110 while(1){} }
#include <reg51.h> sbit d1=P1^0; sbit d6=P1^5; main() { d1=0; d6=0; while(1){} }
效果:两个程序都可点亮D1和D6,运行效果相同
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