p11_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"

unsigned char tag = 0;
unsigned char count = 0;

void  INT_0(void) interrupt 1
{
	count ++;
	if( count >= 10 )
	{
		count = 0;
		tag ++;
		if( tag >= 10 )
		{
			tag = 0;
		}
	}
}

void Delay()
{
	int i;
	for( i = 0; i < 0xff; i ++ )
	{
	}
} 

main()
{
	unsigned char Table[] = {
				0x40, 0x4f, 0x24, 0x30,0x19,
				0x12, 0x02, 0x78, 0x00, 0x10 };
	TMOD = 0x01;
	TH0	= 0x3c;
	TL0 = 0xb0;
	EA	= 1;
	ET0	= 1;
	TR0	= 1;
	while(1)
	{
		P2 = Table[tag];
		Delay();
	}
}