数码管显示23.4怎么显示???
自己写的一种方法,感觉不好。有没有先进的算法??
display(234);
void display(uint tt)
{
uint xi,ge,sh;
sh=tt/100;
ge=tt/10%10;
xi=tt%10;
dula=1;
P0=table[sh];
dula=0;
P0=0xff;
wela=1;
P0=0xfe;
wela=0;
delay(1);
dula=1;
P0=table1[ge];
dula=0;
P0=0xff;
wela=1;
P0=0xfd;
wela=0;
delay(1);
dula=1;
P0=table[xi];
dula=0;
P0=0xff;
wela=1;
P0=0xfb;
wela=0;
delay(1);
}
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#include<reg52.h>
#include<intrins.h>
sbit duan=P3^0;
sbit wei=P3^1;
unsigned char code table[] = {
0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71 };
void delay(void)
{
unsigned char i,j;
for(i=0;i<10;i++)
for(j=0;j<110;j++);
}
void show6led(float num)
{
unsigned char i;
i=num;
duan=1;
P2=table[i]+0x80; //æ¾ç¤ºä¸ªä½åå°æ°ç¹
duan=0;
P2=0xff; //å å ³éled
wei=1;
P2=0xfb; //段é3
wei=0;
delay();
P2=0xff;
P3=0xff; //è¿ä¸¤å¥é常éè¦ï¼ä¸»è¦æ¯æ¸ å±æ¶é
num=num-i;
num=num*10;
i=num;
duan=1;
P2=table[i];
duan=0;
P2=0xff;
wei=1;
P2=0xf7; //段é4ï¼ååä½
wei=0;
delay();
P2=0xff;
P3=0xff;
num=num-i;
num=num*10;
i=num;
duan=1;
P2=table[i];
duan=0;
P2=0xff;
wei=1;
P2=0xef; //段é5ï¼ç¾åä½
wei=0;
delay();
P2=0xff;
P3=0xff;
num=num-i;
num=num*10;
i=num;
duan=1;
P2=table[i];
duan=0;
P2=0xff;
wei=1;
P2=0xdf; //段é6ï¼ååä½
wei=0;
delay();
P2=0xff;
P3=0xff;
}
main()
{
float number;
number=3.718;
while(1)
{
show6led(number);
}
}
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