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

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,

100x66,0x6d,0x7d,0x07,

110x7f,0x6f,0x77,0x7c,

120x39,0x5e,0x79,0x7113};

14uchar code we[]={

150xFE,0xFD,0xFB,0xF7,0xEF,0xDF,0xBF,0x7F16};

17void init();

18void display();

19void main()

20{

21 init();

22 display();

23}

2425void init()

26{

27 TMOD=1;

28 TH0=0xFC;

29 TL0=0x66;

30 ET0=1;

31 EA=1;

32 TR0=1;

33}

34void display()

35{

36 wela=1;

37 P0=0xF8;

38 wela=0;

39 P0=0xFF;

40 dula=1;

41 P0=0x00;

42 dula=0;

43 numdu=1;

44while (1)

45 {

46if (timer==1)

47 {

48 timer=0;

49 wela=1;

50 P0=we[numwe];

51 wela=0;

52 P0=0xFF;

53 numwe++;

54if(numwe==6)

55 numwe=0;

5657 dula=1;

58 P0=table[numdu];

59 dula=0;

60 numdu++;

61if(numdu==7)

62 numdu=1;

63 P0=0xFF;

64 }

65 }

66}

67void delay() interrupt 168{

69 TH0=0xFC;

70 TL0=0x66;

71 timer++;

72}

73