{0xbf,0x86,0xdb,0xcf,0xe6,0xed,0xfd,0x87,0xff,0xef}到底是什么？它是怎么得来的？
1、数码管显示电压值，其实就是一个简易的电压表。不用单片机可以使用ICL7107.
2、网上卖的模块没有发现译码器，是因为采用了更高集成度的集成IC，例如ICL7107.
觉得好了，望采纳！
#include
unsigned char code table[]={0xbf,0x86,0xdb,0xcf,0xe6,0xed,0xfd,0x87,0xff,0xef} ;
//数码管显示的段码0~9 共阳
#define Out P0 //定义段码输出端口
sbit input = P3^2; //红外接收输入脚外部中断0
unsigned char m = 0 ; //计数参数
unsigned char t =60 ; //倒数计时参数
unsigned char i=0 ;
void delay(unsigned char i)
{
unsigned char j,k;
for(k=0;k<i;k++)
for(j=0;j<255;j++);
}
void main()
{
IT0=1; //下降沿触发
EX0=1;
TMOD=0X01;//设置定时器0为模式一，即16位计算模式
TH0=(65536-50000)/256;//给计数寄存器赋值，50毫秒时间
TL0=(65536-50000)%256;
ET0=1;
TR0=1; //开启T0定时器
EA=1;
while(1)
{
Out = table[m/10];
P1 = 0b00001000;
delay(3);
Out = table[m%10];
P1 = 0b00000100;
delay(3);
Out = table[t/10];
P1 = 0b00000010;
delay(3);
Out = table[t%10];
P1 = 0b00000001;
delay(3);
}
}
void inter0(void) interrupt 0 //红外计数
{
t++
if(t==100) t= 0;
}
void tim(void) interrupt 1 //定时器中断0
{
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
i++;
if(i==20)//定时器 计数20次 1s
{
i=0;
t--;
if(t==0)
{t =60 ;}
}
}
//参考一下， 根据自己的实际电路修改。
根据你的补充：这10个数分别代表了七段数码管的0-9共十个状态，每个数是8位，从高往低，左边第一位一直为“1”，后面的7位分别控制数码管的7个段，排列顺序：第二位为中间的短横，第三位为左上的短竖，第四位为左下的短竖，……，按逆时针方向旋转，最后一位是上端的短横。举例来说，0X87，用二进制表示为1000 0111，除去左边第一位，只有最后三位为'1’，表示右下的短竖、右上的短竖和顶端的短横点亮，正好显示为"7"。回答的比较罗嗦，希望你能看懂。
通常是根据某位置0（与逻辑）或1（或逻辑）的需要进行的。
例如a&0xef，在a的第4位置0，其它保持不变。
答：0x6f,0xbf,0x86,0xdb,0xcf,0xe6,0xed,0xfd,0x87,0xff,0xef};uchar idata buf[4];display(){ P0=LEDcode[buf[0]]; m1=0;delay(50);m1=1; P0=LEDcode[buf[1]]; m0=0;delay(50);m0=1; P0=LEDcode[buf[2]]; s1=0;delay(50);s1=1; P0=LEDcode[buf[3]]; s0=0;...
答：0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};unsigned char code table1[]={0xbf,0x86,0xdb,0xcf,0xe6,0xed,0xfd,0x87,0xff,0xef};void delay(uint count) //delay { uint i;while(count){ i=200;while(i>0)i--;count--;} } ///功能:串口初始化,波特率9600，...
答：//不带点的数字uchar code num_dot[]={0xbf,0x86,0xdb,0xcf,0xe6,0xed}; //带点的数字uchar code wei[]={0x0d,0x0b,0x07}; //位码 void delay(uint z){uchar i;while(z--)for(i=0;i<120;i++);}void display(){uchar i=0;bai=(datas*500/255)/100;//计算并得...
答：uchar code table_d[16] = {0xbf,0x86,0xdb,0xcf,0xe6,0xed,0xfd,0x87,0xff,0xef,0xf7,0xfc,0xb9,0xde,0xf9,0xf1};void Delay_1ms(uint i)//1ms延时 { uchar x,j;for(j=0;j<i;j++)for(x=0;x<=110;x++);} void main(){ uchar i = 0;while(1){ P0 = table[i...
答：0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};unsigned char code table1[]={0xbf,0x86,0xdb,0xcf,0xe6,0xed,0xfd,0x87,0xff,0xef};void delay(uint count) //delay { uint i;while(count){ i=200;while(i>0)i--;count--;} } ///功能:串口初始化,波特率9600，...
答：0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};unsigned char code table1[]={0xbf,0x86,0xdb,0xcf,0xe6,0xed,0xfd,0x87,0xff,0xef};void delay(uint count) //delay { uint i;while(count){ i=200;while(i>0)i--;count--;} } ///功能:串口初始化,波特率9600，...
答：uchar code tab[] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f}; //不带小数点 uchar code table1[11]={0XBF,0X86,0XDB,0XCF,0XE6,0XED,0XFD,0X87,0XFF,0XEF,0x39}; //带点的 //0x39是C uchar code LED_W[8] = {0,1,2,3,4,5,6,7};//）...
答：0X90,0X88,0X83,0XC6,0XA1,0X8E,0X86,0xbf}; //0~F,-,共阳 //uchar code tableyi[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,//0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x40};//0-F,-,共阴 uchar code table_d[]={0xbf,0x86,0xdb,0xcf,0xe6,0xed,0xfd...
答：uint second=0; //4利用更名后的关键字来声明一个变量并赋值 uchar count=0,i=0; //5同上 uchar code tab[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f}; //6一维数组，即数码管编码 uchar code tbb[10]={0xbf,0x86,0xdb,0xcf,0xe6,0xed,0xfd,0x87,...
答：sbit led0=P1^0;sbit led1=P1^1;sbit led2=P1^2;sbit led3=P1^3;unsigned char code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0xbf,0x86,0xdb,0xcf,0xe6,0xed,0xfd,0x87,0xff,0xef};void delay(uint z)//延时 { uint x,y;for(x=z;x>0;x--...
