51單片機(jī)C語言程序（四）鍵盤 數(shù)碼管 跑表程序

數(shù)碼管前三位顯示一個跑表，
從000到999之間以1%秒的速度運(yùn)行，
當(dāng)按下一個獨(dú)立鍵盤時跑表停止，
松開手后跑表繼續(xù)運(yùn)行（用定時器設(shè)計表）

#include
#include
#define uint unsigned int
#define uchar unsigned char
sbit dula=P2^6;
sbit wela=P2^7;
sbit s2=P3^4;
uchar code table[]={
0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71,
0x76,0x79,0x38,0x3f,0};
uchar flag,t0,ge,shi,bai;
uint shu;
void init();
void display(uchar aa,uchar bb,uchar cc);
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
void main()
{
init();
while(1)
{
display(bai,shi,ge);
if(s2==0)
{
delay(10);
if(s2==0)
{
TR0=0;
while(!s2)
display(bai,shi,ge);
TR0=1;
}
}
}
}

void init()
{
TMOD=0x01;
TH0=(65536-10000)/256;
TL0=(65536-10000)%256;
EA=1;
ET0=1;
TR0=1;
}

void timer0() interrupt 1
{
TH0=(65536-10000)/256;
TL0=(65536-10000)%256;
shu++;
if(shu==1000)
shu=0;
bai=shu/100;
shi=shu%100/10;
ge=shu%10;

}

void display(uchar aa,uchar bb,uchar cc)
{
dula=1;
P0=table[aa];
dula=0;
P0=0xff;
wela=1;
P0=0xfe;
wela=0;
delay(1);

dula=1;
P0=table[bb];
dula=0;
P0=0xff;
wela=1;
P0=0xfd;
wela=0;
delay(1);

dula=1;
P0=table[cc];
dula=0;
P0=0xff;
wela=1;
P0=0xfb;
wela=0;
delay(1);
}

程序二

數(shù)碼管前三位顯示一個跑表，
從000到999之間以1%秒的速度運(yùn)行，
當(dāng)按下一個獨(dú)立鍵盤時跑表停止，
松開手后跑表繼續(xù)運(yùn)行（用定時器設(shè)計表）

三個獨(dú)立鍵盤實現(xiàn)按下第一個時計時停止，按下第二個
時計時結(jié)束，按下第三個是計數(shù)值清零從頭開始

#include
#include
#define uint unsigned int
#define uchar unsigned char
sbit dula=P2^6;
sbit wela=P2^7;
sbit s2=P3^4;
sbit s3=P3^5;
sbit s4=P3^6;
sbit s5=P3^7;
uchar code table[]={
0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71,
0x76,0x79,0x38,0x3f,0};
uchar flag,t0,ge,shi,bai;
uint shu;
void init();
void display(uchar aa,uchar bb,uchar cc);
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
void main()
{
init();
while(1)
{
display(bai,shi,ge);
if(s2==0)
{
delay(10);
if(s2==0)
{
TR0=0;
while(!s2)
display(bai,shi,ge);
TR0=1;
}
}
if(s3==0)
{
delay(10);
if(s3==0)
{
while(!s2)
display(bai,shi,ge);
TR0=0;
}
}
if(s4==0)
{
delay(10);
if(s4==0)
{
while(!s2)
display(bai,shi,ge);
TR0=1;
}
}
if(s5==0)
{
delay(10);
if(s5==0)
{
while(!s2)
display(bai,shi,ge);
shu=0;
}
}
}
}

void init()
{
TMOD=0x01;
TH0=(65536-10000)/256;
TL0=(65536-10000)%256;
EA=1;
ET0=1;
TR0=1;
}

void timer0() interrupt 1
{
TH0=(65536-10000)/256;
TL0=(65536-10000)%256;
shu++;
if(shu==1000)
shu=0;
bai=shu/100;
shi=shu%100/10;
ge=shu%10;

}