AD转换实验编写程序利用ADC0804 AD转换器采集电位器的模拟电压，将采集到的数字量在程序中换算成实际采集的模拟电压，并用数码管显示所采集的实际模拟电压值。（如：AD转换后的数字量为128，则

缺乏、安全感 2023-01-03 05:58 103阅读 0赞

## 编写程序利用ADC0804 AD转换器采集电位器的模拟电压，将采集到的数字量在程序中换算成实际采集的模拟电压，并用数码管显示所采集的实际模拟电压值。（如：AD转换后的数字量为128，则数码管应该显示2.5） ##

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程序：  
\#include<reg51.h>  
\#define DataPort P1  
\#define WeiPort P2  
sbit ADCS=P3^0;  
sbit ADRD=P3^1;  
sbit ADWR=P3^2;  
sbit ADINTR=P3^3;  
unsigned char led\[\]=\{0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90\};  
unsigned char seg\[\]=\{0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80\};  
unsigned char Tab\[4\];  
void Delay(unsigned int x) \{  
unsigned int i;  
for(i=0;i<x;i++);  
\}

int main() \{  
unsigned int temp,ge,shifen,baifen;  
unsigned char m,a=250;  
while(1) \{  
ADCS=0;  
ADWR=0;  
Delay(1);  
ADWR=1;  
while(ADINTR);  
ADRD=0;  
Delay(1);  
temp=P0;  
ADRD=1;  
ADCS=1;  
ge=temp/51;  
shifen=temp%51*10/51;  
baifen=temp%51*10%51\*10/51;  
Tab\[0\]=led\[0\];  
Tab\[1\]=led\[ge\]&0x7f;  
Tab\[2\]=led\[shifen\];  
Tab\[3\]=led\[baifen\];  
while(a–)\{  
WeiPort=~seg\[m\];  
DataPort=Tab\[m\];  
Delay(300);  
m++;if(m==4)m=0;  
\}  
\}  
\}

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