- #include<reg52.h>
- #define uchar unsigned char
- unsigned char code tab[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};//定义扫描列
- unsigned char code digittab[]={
-
- 0x00,0x00,0x00,0x00,0x00,0x00,0x3e,0x41,0x41,0x41,0x3e,0x00, //0
-
- 0x00,0x00,0x00,0x00,0x21,0x7f,0x01,0x00, //1
-
- 0x00,0x00,0x27,0x45,0x45,0x45,0x39,0x00, //2
-
- 0x00,0x00,0x22,0x49,0x49,0x49,0x36,0x00, //3
-
- 0x00,0x00,0x0c,0x14,0x24,0x7f,0x04,0x00, //4
-
- 0x00,0x00,0x72,0x51,0x51,0x51,0x4e,0x00, //5
-
- 0x00,0x00,0x3e,0x49,0x49,0x49,0x26,0x00, //6
-
- 0x00,0x00,0x40,0x40,0x40,0x4f,0x70,0x00, //7
-
- 0x00,0x00,0x36,0x49,0x49,0x49,0x36,0x00, //8
-
- 0x00,0x00,0x32,0x49,0x49,0x49,0x3e,0x00, //9
-
- 0x00,0x00,0x7F,0x48,0x48,0x30,0x00,0x00, //P
-
- 0x00,0x00,0x7F,0x48,0x4C,0x73,0x00,0x00, //R
-
- 0x00,0x00,0x7F,0x49,0x49,0x49,0x00,0x00, //E
-
- 0x00,0x00,0x3E,0x41,0x41,0x62,0x00,0x00, //C
-
- 0x00,0x00,0x7F,0x08,0x08,0x7F,0x00,0x00, //H
-
- 0x00,0x00,0x00,0xFF,0xFF,0x00,0x00,0x00, //I
-
- 0x00,0x7F,0x10,0x08,0x04,0x7F,0x00,0x00, //N
-
- 0x7C,0x48,0x48,0xFF,0x48,0x48,0x7C,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 //中
-
- };//要显示的字符
-
- void delay(int t)
- {
- int i;
- for(i=1;i<=t;i++);
- }//延时函数
- void main(void)
- {
- int a,b,c;
- while(1)
- {
- for(a=0;a<144;a++) //所有要显示的列数
- {
-
- for(b=0;b<50;b++)//控制移动速度
- {
- P2=0xfe; ///最右边的列先显示，程序定义向左移动
- for(c=0;c<8;c++)//稍加修改可以变成向右移动
- { //例中P2接LED点阵阳极，P0接阴极
- P0=digittab[a+c];//同时显示8列
- delay(100);
- P0=0x00; //禁止扫描列变换时，其它列亮！
- P2=P2<<1|P2>>7;
-
- }
- }
-
- }
-
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