资料下载地址-1016（百度网盘）：点击下载

1)控制显示; 
2)键盘输入价格;
3)价格计算；
4)报警上下限设置；
5)声光报警；
6)清零.去皮.累计
键盘使用：
    价格是在0-9取整数，设置按键进入报警上下限设置
每按增加按钮一次加0.01kg，同理，每按一次减少按钮
减去0.01按清零按钮退出设置，结果按钮是在输入价格
之后计算总价，然后设置按钮重新称重。

总体键盘实现的功能：矩阵键盘，然后对应的1-9数字，设置、加减、累计、清零、去皮、计算功能。

#include<reg51.h>
#include<intrins.h>
#include <absacc.h>
#include <math.h>

#define uchar unsigned char
#define uint  unsigned int
#define BUSY  0x80                               //常量定义
#define DATAPORT P0

sbit ADCS =P3^5; 
sbit ADDI =P3^7;  
sbit ADDO =P3^7;  
sbit ADCLK =P3^6;  

sbit LCM_RS=P2^0;
sbit LCM_RW=P2^1;
sbit LCM_EN=P2^2;
sbit beep =P3^0;   
sbit led = P3^1;
uint x1,y1,z1=0,w1,temp1;
uchar ad_data,k,n,m,e,num,s;                              //采样值存储
uchar total[10];
uchar totalNum = 0;
bit flag = 0;
bit flag_peel = 0;
bit flag_total = 0;
                   
char press_data;                                  //标度变换存储单元
unsigned char ad_alarm;                           //报警值存储单元
unsigned char press_ge=0;                        //显示值百位
unsigned char press_shifen=0;                        //显示值十位
unsigned char press_baifen=0;                         //显示值个位
unsigned char press_qianfen=0;                        //显示值十分位
unsigned int alarm_value = 4200;
unsigned int price_total = 0;
float  press;

uchar code str0[]={"Weight:  .   Kg "};
uchar code str2[]={"Price:          "};
uchar code str3[]={"Total:              "};
uchar code str4[]={"  Change Alarm "};
uchar code str5[]={" .   Kg "};
uchar code str6[]={"Peel: 1.11  Kg  "};
uchar code str7[]={"Total:          "};
uchar code table2[]={0x37,0x38,0x39,0xfd,0x34,0x35,0x36,0x78,0x31,0x32,0x33,0x2d,0x3d,0x30,0x2e,0x2b}; //键盘码

void delay(uint);

...省略部分程序