按下独立按键k1数码管左移，按下独立按键k2数码管数值加1。

typedef unsigned char u8;
u8 code smgwei[]={0x00,0x04,0x08,0x0c,0x10,0x14,0x18,0x1c};
u8 code smgduan[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
sbit key1=P3^1;
sbit key2=P3^0;
u8 wei,shu;

void delay(u16 i)
{
	while(i--);
}
		
void button()
{
	if(key1==0)
	{
  	delay(1000);
	  if(key1==0)
	  {
	    wei++;
		  if(wei>=8)
		  {
			  wei=0;
	    }
		  while(!key1);
    }
	}
	if(key2==0)
	{
		delay(1000);
		if(key2==0)
		{
			shu++;
			if(shu>=10)
			{
				shu=0;
			}
			while(!key2);
		}
	}
}

void main()
{
	while(1)
	{
		button();
		P0=smgduan[shu];
		P2=smgwei[wei];
	}
}