jianpan.c

C51 程序练习

#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
uchar num,wela;
sbit d1=P2^0;
sbit key1=P3^0;
uchar code table[]={
0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71};
void delay(uint z);

void main()
{
	wela=0xfe;//亮aa位1111 1110   
	P1=wela;
	P3=0xff;
	while(1)
	{
		if(key1==0)//如果按下等于0点亮
			{
				delay(10);//延时10ms去抖动
				if(key1==0)//检测却是按下去了
					{
					d1=0;
					num++;
					if(num==10)//加到9返回
						num=0;
					}
					while(!key1);//松手检测
					delay(10);//延时10ms去后面抖动
					while(!key1);
			}
		else//否则熄灭
			d1=1;

		P0=table[num];
		
			
	}
}

void delay(uint z)//延时子程序
{
	uint x,y;
	for(x=z;x>0;x--)
		for(y=110;y>0;y--);
}