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| #include<reg51.h>
unsigned int number =0;
unsigned char qian,bai,shi,ge;
unsigned char code Seg_Tab[] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
//共阴0-F段码，加code是存在rom里面
void delay(unsigned int n);//@12MHz晶振
void Seg\_display(unsigned int val);
void init();
//void jishu();
void main (){
init();
//jishu();
while(1)
{
Seg\_display(number);
}
}
void init(){
TMOD = 0X01;
TL0 =(65536-50000)%256;
TH0 =(65536-50000)/256;
EA = 1;
TR0 = 1;
ET0 = 1;
}
//void jishu(){
// qian = number/1000;
// bai = number%1000/100;
// shi = number%1000%100/10;
// ge = number%1000/100%10;
//}
//定时器0函数
void time0() interrupt 1 using 1
{ char i;
TL0 =(65536-50000)%256;
TH0 =(65536-50000)/256;
i++;
if(i==20)
{//1秒钟=50ms\*20=1000ms，20次计数为1秒钟
i=0;
number++;
}
}
//延时n毫秒
void delay(unsigned int n)//@12MHz晶振
{
unsigned int i=0,j=0;
for(i=0;i<n;i++)
for(j=0;j<123;j++);
}
void Seg\_display(unsigned int val){
unsigned char i,dia_data;
for(i=0;i<4;i++){
dia_data = val % 10;
val =val/10 ;
P0 = Seg_Tab[dia_data];
P1 = i;
delay(5);
P0=0;//消隐作用
}
}
|
