数码管动态扫描显示方式

数码管依次显示1-6，并保持造成视觉停留状态，也叫动态扫描显示

 1#include <reg52.h>
 2#define uint unsigned int
 3#define uchar unsigned char
 4sbit dula=P2^6;

 5sbit wela=P2^7;
 6uchar timer,numwe,numdu; //timer定时器计数 temp数字临时存放
 7//数字字码表 0-F 8uchar code table[]={
 90x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x7113};
uchar code we[]={
0xFE,0xFD,0xFB,0xF7,0xEF,0xDF,0xBF,0x7F16};
void init();
void display();
void main()
{
    init();
    display();
}
25void init()
{
    TMOD=1;
    TH0=0xFC;
    TL0=0x66;
    ET0=1;
    EA=1;
    TR0=1;
}
void display()
{
    wela=1;
    P0=0xF8;
    wela=0;
    P0=0xFF;
    dula=1;
    P0=0x00;
    dula=0;
    numdu=1;
while (1)
    {
if (timer==1)
        {
            timer=0;
            wela=1;
            P0=we[numwe];
            wela=0;
            P0=0xFF;
            numwe++;
if(numwe==6)
                numwe=0;
57            dula=1;
            P0=table[numdu];
            dula=0;
            numdu++;
if(numdu==7)
                numdu=1;
            P0=0xFF;
        }
    }
}
void delay() interrupt 168{
    TH0=0xFC;
    TL0=0x66;
    timer++;
}