C51单片机中的三种方法解决数码管的动态显示,使数码管显示1-8数字。三种方法的代码如下,此时读者需要十分注意你代码中引脚的先后顺序,否则可能达不到预期的效果.
#include
#define uchar unsigned char
#define uint unsigned int
uchar code seg1[]={0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80}; //使用的是共阳极数码管
void delayms(uint i)
{
uchar j;
while(i--)
for(j=0;j<=125;j++);
}
void main()
{
while(1)
{
uchar i,j;
P2=0x80;
for(i=0;i<8;i++)
{
P2=_crol_(P2,1);
P0=seg1[i];
delayms(1);
}
}
}
#include
#define uchar unsigned char
#define uint unsigned int
uchar code seg1[]={0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80}; //使用的是共阳极数码管
uchar code seg2[]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};
void delayms(uint i)
{
uchar j;
while(i--)
for(j=0;j<=125;j++);
}
void main()
{
while(1)
{
uchar i;
for(i=0;i<8;i++)
{
P2=seg2[i];
P0=seg1[i];
delayms(1);
}
}
#include
#define uchar unsigned char
#define uint unsigned int
//uchar code seg1[]={0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80}; //使用的是共阳极数码管
//uchar code seg2[]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};
void delayms(uint i)
{
uchar j;
while(i--)
for(j=0;j<=125;j++);
}
void main()
{
while(1)
{
P2=0x01;
P0=0xf9;
delayms(1);
P2=0x02;
P0=0xa4;
delayms(1);
P2=0x04;
P0=0xb0;
delayms(1);
P2=0x08;
P0=0x99;
delayms(1);
P2=0x10;
P0=0x92;
delayms(1);
P2=0x20;
P0=0x82;
delayms(1);
P2=0x40;
P0=0xf8;
delayms(1);
P2=0x80;
P0=0x80;
delayms(1);
}
}
仿真图如下:
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