本程序所用的原理图下载: 点这里 ，单片机芯片使用的stc89c51；找到部分的原理图即可.这是一整个单片机的电路图其他的忽略.
以下是3个程序的源码： /**********利用定时器定时50毫秒动态扫描数码管***********/ /** *功能：定时器T1实现数码管动态扫瞄123456(if) *作者：徐冉 *日期：2013-06-12-22：10 *备注：不同的方法实现显示设备的动态扫描，节约能耗 **/ /****************AT89C52-RC *************/ /****************51hei开发板*************/ #include <reg52.h> typedef unsigned int uint; typedef unsigned char uchar; sbit wela = P2^7; sbit dula = P2^6; //段选数据编码表 uchar code table[] = { 0x3F, //"0" 0x06, //"1" 0x5B, //"2" 0x4F, //"3" 0x66, //"4" 0x6D, //"5" 0x7D, //"6" 0x07, //"7" 0x7F, //"8" 0x6F //"9" }; //位选数据编码表 uchar code table1[] = { 0xfe, 0xfd, 0xfb, 0xf7, 0xef, 0xdf }; uchar j = 1, counter = 0; //延时程序 void display() { dula = 1; P0 = table[j++]; dula = 0; if(j >= 7) { j = 1; } } //刷新程序 void refrash() { static uchar i = 0; if(0 == i) { wela = 1; P0 = table1[0]; wela = 0; } if(1 == i) { wela = 1; P0 = table1[1]; wela = 0; } if(2 == i) { wela = 1; P0 = table1[2]; wela = 0; } if(3 == i) { wela = 1; P0 = table1[3]; wela = 0; } if(4 == i) { wela = 1; P0 = table1[4]; wela = 0; } if(5 == i) { wela = 1; P0 = table1[5]; wela = 0; } i++; if(i >= 6) { i = 0; } } //定时器T1初始化 void init() { P0 = 0x00;//关闭数码管显示 TMOD = 0x11; TH1 = 0xFC; //T1定时1毫秒 = 0x66; TR1 = 1; EA = 1; ET1 = 1; } //主程序 void main(void) { init(); while(1) { if(counter == 50) { counter = 0; display();//显示 refrash();//刷新 } } } //T1中断服务程序 void timer1_int() interrupt 3 { TH1 = 0xFC; TL1 = 0x66; counter++; }
/**********利用定时器定时50毫秒动态扫描数码管***********/ /** *功能：定时器T1实现数码管动态扫瞄123456(switch case) *作者：徐冉 *日期：2013-06-12-21：50 *备注：不同的方法实现显示设备的动态扫描，节约能耗 **/ /****************AT89C52-RC MCU*************/ /****************51hei开发板*************/ #include <reg52.h> typedef unsigned int uint; typedef unsigned char uchar; sbit wela = P2^7; sbit dula = P2^6; //段选数据编码表 uchar code table[] = { 0x3F, //"0" 0x06, //"1" 0x5B, //"2" 0x4F, //"3" 0x66, //"4" 0x6D, //"5" 0x7D, //"6" 0x07, //"7" 0x7F, //"8" 0x6F //"9" }; //位选数据编码表 uchar code table1[] = { 0xfe, 0xfd, 0xfb, 0xf7, 0xef, 0xdf }; uchar j = 1, counter = 0; //延时程序 void display() { dula = 1; P0 = table[j++]; dula = 0; if(j >= 7) { j = 1; } } //刷新程序 void refrash() { static uchar i = 0; switch(i) { case 0: wela = 1; P0 = table1[i]; wela = 0; i++; break; case 1: wela = 1; P0 = table1[i]; wela = 0; i++; break; case 2: wela = 1; P0 = table1[i]; wela = 0; i++; break; case 3: wela = 1; P0 = table1[i]; wela = 0; i++; break; case 4: wela = 1; P0 = table1[i]; wela = 0; i++; break; case 5: wela = 1; P0 = table1[i]; wela = 0; i++; break; default: break; } if(i >= 6) { i = 0; } } //定时器T1初始化 void init() { P0 = 0x00;//关闭数码管显示 TMOD = 0x11; TH1 = 0xFC; //T1定时1毫秒 TL1 = 0x66; TR1 = 1; EA = 1; ET1 = 1; } //主程序 void main(void) { init(); while(1) { if(counter == 50) { counter = 0; display();//显示 refrash();//刷新 } } } //T1中断服务程序 void timer1_int() interrupt 3 { TH1 = 0xFC; TL1 = 0x66; counter++; }
/**********利用延时函数定时50毫秒动态扫描数码管***********/ /** *功能：延时函数实现数码管动态扫瞄123456 *作者：徐冉 *日期：2013-06-12-20：50 *备注：不同的方法实现显示设备的动态扫描，节约能耗 **/ /****************AT89C52-RC MCU*************/ /****************51hei开发板*************/ #include <reg52.h> typedef unsigned int uint; typedef unsigned char uchar; sbit wela = P2^7; sbit dula = P2^6; //段选编码表 uchar code table[] = { 0x3F, //"0" 0x06, //"1" 0x5B, //"2" 0x4F, //"3" 0x66, //"4" 0x6D, //"5" 0x7D, //"6" 0x07, //"7" 0x7F, //"8" 0x6F //"9" }; //位选编码表 uchar code table1[] = { 0xfe, 0xfd, 0xfb, 0xf7, 0xef, 0xdf }; //毫秒延时程序 void delay(uint xms) { uint x, y; for(x = 0; x < xms; x++) for(y = 0; y < 110; y++); } //动态扫描程序 void display() { static uchar i = 0;//静态变量i dula = 1; P0 = table[i+1];//段选数据 dula = 0; P0 = 0xff;//消影 wela = 1; P0 = table1[i]; //位选数据 wela = 0; delay(50);//延时50毫秒 i++; if(i >= 6) { i = 0; } } //主程序 void main(void) { P0 = 0x00;//开始时关闭所有数码管显示 while(1) { display(); } }
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