日志
数码管显示3位数
||
采用动态显示，利用子函数display。
- #include<reg52.h>
- #include<intrins.h>
- #define uint unsigned int
- #define uchar unsigned char
- sbit dula=P2^6;
- sbit wela=P2^7;
- uint temp;
- uchar bai,shi,ge;
- void delay(uint z);
- void desplay(uchar bai,uchar shi,uchar ge);
- uchar code table[]={
- 0x3f,0x06,0x5b,0x4f,
- 0x66,0x6d,0x7d,0x07,
- 0x7f,0x6f,0x77,0x7c,
- 0x39,0x5e,0x79,0x71,0x00};
- void main()
- {
- temp=125;
- bai=temp/100;
- shi=temp%100/10;
- ge=temp%10;
- while(1)
- {
- desplay(bai,shi,ge);
- }
- }
- void delay(uint z)
- {
- uint x,y;
- for(x=z;x>0;x--)
- for(y=110;y>0;y--);
- }
- void desplay(uchar bai,uchar shi,uchar ge)
- {
- wela=1;
- P0=0xfe;
- wela=0;
- dula=1;
- P0=table[bai];
- dula=0;
- delay(5);
- wela=1;
- P0=0xfd;
- wela=0;
- dula=1;
- P0=table[shi];
- dula=0;
- delay(5);
- wela=1;
- P0=0xfb;
- wela=0;
- dula=1;
- P0=table[ge];
- dula=0;
- delay(5);
- }
- // ！！注意不能直接打开3个数码管，必须一个一个打开。动态扫描...
