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視頻演示：
數(shù)碼管顯示部分的原理圖（只看顯示部分）：http://www.torrancerestoration.com/f/51hei-5.pdf
程序源代碼：
- #include<reg51.h>
- #include<intrins.h>
- #define uchar unsigned char
- #define uint unsigned int
- sbit wela=P2^7;
- sbit dula=P2^6;
- uchar code duanma[]={0x06,0x00,0x38,0x3f,0x3e,0x79,0x00,0x6e,0x3f,0xbe,0x00};
- uchar code weima[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
- uchar smg_change[11];
- void display(uchar f,uchar n )
- {
- static uchar i;
- P0=0X00;
- dula=1;dula=0;
-
- P0=weima[f+i];
- wela=1;wela=0;
-
- P0=smg_change[i];
- dula=1;dula=0;
- i++;
- if(i==n)
- i=0;
- }
- void jiaohuan()
- {
- uchar i,dd;
- for(i=0;i<10;i++)
- {
- dd=smg_change[i];
- smg_change[i]=smg_change[i+1];
- smg_change[i+1]=dd;
- }
- }
- void main()
- {
- uchar y,i;
- uint t;
- for(i=0;i<11;i++)
- {
- smg_change[i]=duanma[i];
- }
- while(1)
- {
- display(y,6);
- t++;
- if(t==10000)
- { t=0;
- jiaohuan();
- }
- }
- }
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