bit.c

利用位变量控制取反使灯闪烁

#include<reg52.h>
sbit key=P1^0;
sbit led=P0^0;
bit light;
void main()
{
	unsigned int n;
	while(1)
	{
	if(!key)
	{
		for(n=5000;n>0;n--);
		light=~light;
		while(!key);
		for(n=5000;n>0;n--);
	}
		led=light;
	}
}