51单片机时钟C语言代码

#include
#define uchar unsigned char
#define uint unsigned int
sbit key1=P3^4;
sbit key2=P3^5;
sbit key3=P3^6;
sbit key4=P3^7;
sbit dula=P2^6;
sbit wela=P2^7;
uchar code table[]={
0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71};
void delay(uint);
void keyscan();
void display(uchar,uchar,uchar,uchar,uchar,uchar);
uchar num,num1,num2,num3,shishi,shige,fenshi,fenge,mshi,mge;
void main()
{
TMOD=0x11;
TH0=(65536-45872)/256;
TL0=(65536-45872)%256;
EA=1;
ET0=1;
TR0=1;
while(1)
{
display(shishi,shige,fenshi,fenge,mshi,mge);
keyscan();
}
}
void display(uchar shishi,uchar shige,uchar fenshi,uchar fenge,uchar mshi,uchar mge)
{
dula=1;
P0=table[shishi];
dula=0;
P0=0xff;
wela=1;
P0=0xfe;
wela=0;
delay(1);

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

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

dula=1;
P0=table[fenge];
dula=0;
P0=0xff;
wela=1;
P0=0xf7;
wela=0;
delay(1);

dula=1;
P0=table[mshi];
dula=0;
P0=0xff;
wela=1;
P0=0xef;
wela=0;
delay(1);

dula=1;
P0=table[mge];
dula=0;
P0=0xff;
wela=1;
P0=0xdf;
wela=0;
delay(1);
}
void delay(uint x)
{
uint i,j;
for(i=x;i>0;i--)
for(j=110;j>0;j--);
}
void T0_time()interrupt 1
{
TH0=(65536-45872)/256;
TL0=(65536-45872)%256;
num++;
if(num==20)
{
num=0;
num1++;
if(num1==60)
{
num1=0;
num2++;

if(num2==60)
{
num2=0;
num3++;

if(num3==24)
{
num3=0;
num2=0;
num1=0;
}
}
}
mshi=num1/10;
mge=num1%10;
fenshi=num2/10;
fenge=num2%10;
shishi=num3/10;
shige=num3%10;
}
}
void keyscan()
{
if(key1==0)
{
delay(10);
if(key1==0)
{
num3++;
if(num3==24)
num3=0;
while(!key1);
}
}
if(key2==0)
{
delay(10);
if(key2==0)
{
num2++;
if(num2==60)
num2=0;
while(!key2);
}
}
if(key3==0)
{
delay(10);
if(key3==0)
{
num1++;
if(num1==60)
num1=0;
while(!key3);
}
}
if(key4==0)
{
delay(10);
if(key4==0)
{
num3=0;
num2=0;
num1=0;
while(!key4);
TR0=~TR0;
}
}
}