单片机和proteus
#include <reg52.h>#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);
uchar numt0,num;
void display(uchar numdis)
{
uchar shi,ge;
shi = numdis/10;
ge = numdis%10;
dula = 1;
P0 = table[shi];
dula = 0;
P0 = 0xff;
wela = 1;
P0 = 0xfe;
wela = 0;
delay(5);
dula = 1;
P0 = table[ge];
dula = 0;
P0 = 0xff;
wela = 1;
P0 = 0xfd;
wela = 0;
delay(5);
}
void delay(uint z)
{
uint i,j;
for(i = z;i > 0;i--)
for(j = 110;j > 0;j--);
}
void init()
{
TMOD = 0x01;
TH0 = (65536 - 50000)/256;
TL0 = (65536 - 50000)%256;
EA = 1;
ET0 = 1;
}
void keyscan()
{
if(key1 == 0)
{
delay(10);
if(key1 == 0)
{
num++;
if(num == 60)
num = 0;
while(!key1);
}
}
if(key2 == 0)
{
delay(10);
if(key2 == 0)
{
if(num == 0)
num = 60;
num--;
while(!key2);
}
}
if(key3 == 0)
{
delay(10);
if(key3 == 0)
{
num = 0;
while(!key3);
}
}
if(key4 == 0)
{
delay(10);
if(key4 == 0)
{
while(!key4);
TR0 = ~TR0;
}
}
}
void main()
{
init();
while(1)
{
keyscan();
display(num);
}
}
void T0_time()interrupt 1
{
TH0 = (65536 - 50000)/256;
TL0 = (65536 - 50000)%256;
numt0++;
if(numt0 == 20)
{
numt0 = 0;
num++;
if(num == 60)
num = 0;
}
}
这是我程序 下面是Proteus
