久久久久久久999_99精品久久精品一区二区爱城_成人欧美一区二区三区在线播放_国产精品日本一区二区不卡视频_国产午夜视频_欧美精品在线观看免费

<button id="aocwq"></button>

標題: 基于51單片機的數字時鐘設計 [打印本頁]

作者: 15706569218 時間: 2018-11-10 18:13
標題: 基于51單片機的數字時鐘設計
源代碼

#include <reg52.h>

sbit k0=P1^0;

sbit k1=P1^1;

sbit k2=P1^2;

unsigned char second,minute,hour,i,k,l,j,x,y;

unsigned int n;

unsigned char code mod[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,

0x7f,0x6f};

timer0(void) interrupt 1

{

n++;

TH0=0x3c;

TL0=0xb0;

}

void delay()

{ unsigned int time,p;

for(time=30;time>0;time--)

for(p=0;p<10;p++);

}

void xianshi()

{

if(n==20)

{

n=0;

second++;

while(second==60)

{ second=0;

minute++;

if(minute==60)

{minute=0;

hour++;

if(hour==24)

{

hour=0;

}}}}

x=hour%10;

y=hour/10;

l=minute%10;

j=minute/10;

i=second%10;

k=second/10;P0=0x00;

P2=0x01;

P0=mod;

delay();P0=0x00;

P2=0x02;

P0=mod[k];

delay();P0=0x00;

P2=0x04;

P0=0x40;

delay();P0=0x00;

P2=0x08;

P0=mod[l];

delay();P0=0x00;

P2=0x10;

P0=mod[j];

delay();P0=0x00;

P2=0x20;

P0=0x40;

delay();P0=0x00;

P2=0x40;

P0=mod[x];

delay();P0=0x00;

P2=0x80;

P0=mod[y];

delay();P0=0x00;

}

void kongzhi()

{if(k0==0)

{TR0=0;

while(k0==0) xianshi();

delay();

while(k0==1)

{if(k1==0)

{minute++;

while(minute==60)

{minute=0;

}}

while(k1==0) xianshi();

if(k2==0)

{minute--;

while(minute==-1)

{minute=59;

}}

while(k2==0) xianshi();

xianshi();

}

if(k0==0)

{TR0=0;

while(k0==0) xianshi();

delay();

while(k0==1)

{if(k1==0)

{hour++;

while(hour==24)

{hour=0;

}}

while(k1==0) xianshi();

if(k2==0)

{hour--;

while(hour==-1)

{hour=23;

}}

while(k2==0) xianshi();

xianshi();

}

if(k0==0)

{while(k0==0) xianshi();

TR0=1;

return;

}}}}

void main()

{

TMOD=0x01;

TH0=0x3c;

TL0=0xb0;

EA=1;

ET0=1;

TR0=1;

while(1)

{

xianshi();

kongzhi();

}}