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https://docs.qq.com/doc/DTlRSd01BZXNpRUxl

摘要：设计了一个关于单片机数据采集控制系统的作品，采用数模转换和模数转换的技术，实现了8路数据采集功能和输出模拟信号的功能

关键词：DAC转换电路、ADC转换电路、数码管电路和警报电路

 

#include <reg51.h> 
#include <absacc.h>
#define DAC0832 XBYTE[0XFFFE]		//	DAC0832的地址
unsigned char code zixing[]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F};//0-9 
unsigned char code zixing1[]={0xbF,0x86,0xdB,0xcF,0xe6,0xeD,0xfD,0x87,0xfF,0xeF}; 	//0-9
unsigned char buf[]={0x3f,0x3f,0x00,0x00,0x00,0x00,0x00,0x00} ;	   //显示缓冲区
unsigned char c1[]={1,1,1,1,0,0,0,0};  //数码管选位
unsigned char b1[]={1,1,0,0,1,1,0,0};  	//数码管选位
unsigned char a1[]={1,0,1,0,1,0,1,0};	//数码管选位
unsigned char ad_data;//定义成全局变量，以便主函数和中断函数都能引用
unsigned char i,j;  
unsigned char TD;  
unsigned int MAX; 
unsigned int MIN;
unsigned int dig,dd;
unsigned int Aa,Bb,Cc,xuhao,df;
long int vv;
sbit P3_0=P3^0;
sbit P3_1=P3^1;
sbit P3_4=P3^4;
sbit P3_7=P3^7;
sbit P1_0=P1^0;
sbit P1_1=P1^1;
sbit P1_2=P1^2;
sbit P1_3=P1^3;
sbit P1_4=P1^4;
sbit P1_5=P1^5;
sbit P1_6=P1^6;
sbit P1_7=P1^7;
void delay(unsigned int time); //子程序声明  
void ADC();
void xianshi();
void xianding();