p10_1.c

单片机原理与应用实例教程 单片机原理与应用实例教程

#include "REG51.H"

void Delay()
{
	int i, j, k;
	for( i = 0; i < 5; i ++ )
	{
		for( j = 0; j < 0x82; j ++ )
		{
			for( k = 0; k < 0xff; k ++ )
			{
			}
		}
	}
}

sbit P3_7 = P3^7;
main()
{
	int CC = 0;
	while(1)
	{
		P3_7 	= CC;
		Delay();
		if( CC == 0 )
			CC = 1;
		else
			CC = 0;
	}
}