基于单片机程控滤波放大器增益设计-protues仿真

百度网盘下载地址(982)：点击下载

可以实现20倍、30倍和50倍的放大增益porutes仿真。

#include <AT89X52.h>
#include <intrins.h>
sbit sbF1 = P2 ^ 0;   //不进行放大处理
sbit sbF20 = P2 ^ 1;  //放大20倍
sbit sbF30 = P2 ^ 2;  //放大30倍
sbit sbF50 = P2 ^ 3;  //放大50倍

sbit sbDIN = P3 ^ 0;                        //MAX7219的数据引脚
sbit sbLOAD = P3 ^ 1;                      //MAX7219的控制引脚
sbit sbCLK = P3 ^ 2;                       //MAX7219的时钟引脚

//显示缓冲区定义
unsigned char Disp_Buffer[8]=            //MAX7219的输出缓冲
{
 	0,0,0,0,0,0,0,0
};
unsigned char Disp_Buffer1[8]=            //MAX7219的输出缓冲
{
 	0,0,0,0,0,0,0,1
};
unsigned char Disp_Buffer20[8]=            //MAX7219的输出缓冲
{
 	0,0,0,0,0,0,2,0
};
unsigned char Disp_Buffer30[8]=            //MAX7219的输出缓冲
{
 	0,0,0,0,0,0,3,0
};
unsigned char Disp_Buffer50[8]=            //MAX7219的输出缓冲
{
 	0,0,0,0,0,0,5,0
};