單片機數(shù)字電壓表數(shù)碼管動態(tài)顯示

ID:337280 · 發(fā)表于 2018-7-16 15:20

剛學(xué)的單片機這是課上做的用的是AT89C52 通過仿真來實現(xiàn)的沒有實物來測試現(xiàn)在發(fā)一下給有需要的人

下面是程序

#include<at89x52.h>
sbit OE=P3^0;
sbit EOC=P3^1;
sbit CLOCK=P2^6;
sbit ST=P3^2;
sbit LED4=P2^3;
sbit LED3=P2^2;
sbit LED2=P2^1;
sbit LED1=P2^0;
unsigned char code tab[]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0X7f,0x6F};
unsigned char dat[]={0,0,0,0};
unsigned char adc;
unsigned int tmp;
void Delay(void)
{
unsigned char i;
for(i=0;i<250;i++);
}
void main(void)
{
EA=1;
ET0=1;
TMOD=0x02;
TL0=206;
TL0=206;
TR0=1;
while(1)
{
ST=0;
ST=1;
ST=0;
while(!EOC);
OE=1;
adc=P1;
tmp=adc*196;
dat[3]=tmp/10000;
dat[2]=tmp/1000%10;
dat[1]=tmp/100%10;
dat[0]=tmp/10%10;
LED1=0;
P0=tab[dat[3]]+0x80;
Delay();
LED1=1;
LED2=0;
P0=tab[dat[2]];
Delay();
LED2=1;
LED3=0;
P0=tab[dat[1]];
Delay();
LED3=1;
LED4=0;
P0=tab[dat[0]];
Delay();
LED4=1;
}
}
void timer0(void) interrupt 1
{
CLOCK=~CLOCK;
}