自己写的按键单片机程序
用4个按键来控制数码管显示的内容#include#define duan P0//段选#define wei P2//位选unsigned char code wei1[8] = {0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};//位选控制查表的方法控制unsigned char code duan1[17] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0 x71};//0、1、2、3、4、5、6、7、8、9、A、b、C、d、E、F的显示码unsigned char ge,shi,bai,a,b;sbit key1=P1;sbit key2=P1 ;sbit key3=P1 ;sbit key4=P1 ;void keys();//按键函数void s(unsigned char xms);//延时函数void DigDisplay(); //动态显示函数void init(); //初始化函数void main(void){init(); while(1){DigDisplay();keys();} }void DigDisplay(){unsigned char i;unsigned int j;bai=a/100;shi=a%100/10;ge=a%10;i=0;wei = wei1[i];//发送位选duan = duan1[bai]; //发送段码j = 10;//扫描间隔时间设定while(j--);duan = 0x00; //消隐i++;wei = wei1[i];//发送位选duan = duan1[shi]; //发送段码j = 10;//扫描间隔时间设定while(j--);duan = 0x00; //消隐i++;wei = wei1[i];//发送位选duan = duan1[ge]; //发送段码j = 10;//扫描间隔时间设定while(j--);duan = 0x00; //消隐}void init() {key1=1;key2=1;key3=1;key4=1;TMOD=0X01;TH0=(65536-
45872)/256;TL0=(65536-45872)%256;EA=1;ET0=1;}void s(unsigned char xms){unsigned char x,y;for(x=xms;x>0;x--)for(y=110;y>0;y--);}void times() interrupt 1{TH0=(65536-45872)/256;TL0=(65536-45872)%256;b++;if(b==20){b=0;a++;if(a==256){a=0;}}}void
keys(){if(key1==0){s(10);if(key1==0){a++;TR0=0;if(a==256)a=0;while(!key1)Dig Display();}}if(key2==0){s(10);if(key2==0){TR0=0;if(a==0)a=256;a--。