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- #include <AT89X52.H>
- #define uint unsigned int
- #define uchar unsigned char
- uchar code table[]={ //0~f段碼
- 0x3f,0x06,0x5b,0x4f,
- 0x66,0x6d,0x7d,0x07,
- 0x7f,0x6f,0x77,0x7c,
- 0x39,0x5e,0x79,0x71};
- uchar code wei[]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};
- /***********定時(shí)器初始化程序****************/
- void Timer0Init(void) //1毫秒@12.000MHz
- {
- TMOD |= 0x01; //設(shè)置定時(shí)器模式
- TL0 = 0x18; //設(shè)置定時(shí)初值
- TH0 = 0xFC; //設(shè)置定時(shí)初值
- TF0 = 0; //清除TF0標(biāo)志
- TR0 = 1; //定時(shí)器0開(kāi)始計(jì)時(shí)
- }
- void display()//顯示程序
- {
- static uchar i=0; //計(jì)數(shù)變量
- P0=0x00; //消隱
- P2=wei[i];
- P0=table[i];
- i++;
- i%=8;
- }
- /***************主程序****************/
- void main()
- {
- Timer0Init(); //定時(shí)器初始化
- while(1)
- {
- if(TF0==1)
- {
- TF0=0;
- TL0 = 0x18; //設(shè)置定時(shí)初值
- TH0 = 0xFC; //設(shè)置定時(shí)初值
- display();
- }
- }
- }
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把第二個(gè)數(shù)碼管的段位和第一個(gè)的段位并連，第二個(gè)數(shù)碼管的位段連接單片機(jī)的IO輸出口就是8位數(shù)碼管了。
