牛人制作的單片機科學型計算器，功能太強大大家一起欣賞

ID:163090 · 發表于 2020-4-3 17:46

以下是計算器功能演示視頻地址：
https://www.bilibili.com/video/B ... 3625234719827099345

制作出來的實物圖如下：

以下是部分單片機程序代碼：
完整代碼在附件中

#include "STC12C5A60S2.h"
#include "alg_caculate.h"
#include "UART.h"
#include "alg_linearlist.h"
#include "keyboard_input.h"
#include "lcd_12864.h"
#include "mode.h"
#include "solve_equation.h"
#include "function_pic.h"
#include "eeprom_rw.h"
#include "pwm.h"
#include "time.h"

#include <stdio.h>
#include <stdlib.h>

#define uchar unsigned char
#define uint unsigned int

uchar num0;                //輸入的鍵值
int       count1;    //翻頁計數

void main()
{
      PWM_init();
      t0_init();
      t1_init();
      lcd_init();
      lcd_clear_pic();
      while(1)
      {


      mode_select();

      }

}

全部資料51hei下載地址：

計算器正式版Ver1.0.0.7z (545.05 KB, 下載次數: 345)

ID:163090 · 發表于 2020-4-3 17:48

計算器主控芯片為STC12C5A60S2，顯示器為12864液晶。額外的外設有EEPROM、DS1302、矩陣鍵盤，為科學計算器提供存儲、時鐘、輸入功能。在等號被按下前，允許輸入完整的表達式。因此在軟件上需要做到語法識別、優先級順序、括號嵌套等功能。計算器擁有普通計算(表達式與函數識別、計算)、計算結果存儲/回看、復數計算、矩陣運算、函數圖形、解方程、統計、最小二乘法求回歸直線、一階常微分方程、單位，進制轉換、定積分、求導等功能。有節電模式，5分鐘不輸入自動關機，液晶屏亮度5級可調。

ID:163090 · 發表于 2020-4-3 17:48

計算器主控芯片為STC12C5A60S2，顯示器為12864液晶。額外的外設有EEPROM、DS1302、矩陣鍵盤，為科學計算器提供存儲、時鐘、輸入功能。
在等號被按下前，允許輸入完整的表達式。因此在軟件上需要做到語法識別、優先級順序、括號嵌套等功能。
計算器擁有普通計算(表達式與函數識別、計算)、計算結果存儲/回看、復數計算、矩陣運算、函數圖形、解方程、統計、最小二乘法求回歸直線、一階常微分方程、單位，進制轉換、定積分、求導等功能。
有節電模式，5分鐘不輸入自動關機，液晶屏亮度5級可調。

ID:163090 · 發表于 2020-4-3 18:03

沒有電路圖，系統按鍵部分電路需要自己根據按鍵模塊程序來進行分析反推硬件電路應該如何連接。矩陣按鍵有8行5列，一共是40個按鍵，按照程序的意思好像是電路圖如下圖所示：

以下是按鍵輸入部分電路程序：

#include "STC12C5A60S2.h"
#include <intrins.h>
#include "keyboard_device.h"
#include "lcd_12864.h"
#include "eeprom_rw.h"
#include "mode.h"
#include "pwm.h"
#define uchar unsigned char
#define uint unsigned int

uchar shift=0;//shift鍵
void keyboard_cursor_flash(void);

extern bit gb_flag;
extern uchar flash_count;
extern uchar count;
extern uchar hang;

extern uint time_out;

uchar code welcome_pic[]={
/*--  調入了一幅圖像：boeing.bmp  --*/
/*--  寬度x高度=128x64  --*/
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x07,0xFF,0xFE,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x7E,0x1F,0xC7,0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0xFC,0x0F,0xE1,0xFC,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x01,0xFC,0x07,0xE0,0xFE,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x03,0xF8,0x07,0xF0,0x7F,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x03,0xF8,0x07,0xF0,0x7F,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x03,0xF8,0x07,0xF0,0x3F,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x03,0xF8,0x07,0xF0,0x3F,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x03,0xF8,0x07,0xF0,0x3F,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x03,0xF8,0x07,0xF0,0x3F,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x03,0xF8,0x0F,0xE0,0x3F,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x03,0xF9,0x9F,0xE0,0x3F,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x03,0xF9,0xFF,0xFF,0x3F,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x03,0xF9,0xFF,0xFF,0xBF,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x03,0xF9,0x1F,0xE0,0x3F,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x03,0xF8,0x0F,0xF0,0x3F,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x03,0xF8,0x07,0xF0,0x3F,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x03,0xF8,0x07,0xF0,0x3F,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x03,0xF8,0x07,0xF8,0x3F,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x03,0xF8,0x07,0xF8,0x3F,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x03,0xF8,0x07,0xF8,0x3F,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x03,0xF8,0x07,0xF8,0x3F,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x03,0xF8,0x07,0xF8,0x3F,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x03,0xF8,0x07,0xF0,0x3F,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x03,0xF8,0x07,0xF0,0x3F,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x03,0xFC,0x07,0xE0,0x3F,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x03,0xFE,0x0F,0xC0,0x3F,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x03,0xFF,0xFF,0x80,0x7F,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
};

/* ========= 延時20ms11.0592MHz ========= */
void delay_20m(void) //消抖用延時
{
unsigned char i, j, k;

i = 1;
j = 216;
k = 35;
do
{
do
{
while (--k);
} while (--j);
} while (--i);
}

/* ========= 延時2s11.0592MHz ========= */
void delay_2s(void) //退出刷屏用延時
{
unsigned char i, j, k;

i = 64;
j = 9;
k = 179;
do
{
do
{
while (--k);
} while (--j);
} while (--i);
}

/* ========= 鍵盤掃描 ========= */
uchar keyboard(void)
{
uchar code keyboard_Scan[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f}; //鍵盤掃描庫
//11111110,11111101,11111011,11110111,11101111,11011111,10111111,01111111
uchar i, j, pc, flag = 0;
uchar XScan=0;
uchar in = 0;
uchar test;
while(in == 0)
{
#ifdef KEY_X_IS_HIGH
KEY_X &= 0x07; //清空高5位    0000 0111
XScan = 0x80; //    1000 0000
// XScan = 0x08;
#endif
// #ifdef KEY_X_IS_LOW
// KEY_X &= 0xe0; //清空低5位    1110 0000
// XScan = 0x01; //    0000 0001
// #endif
for(i=0;i<5;i++)
{
KEY_X &=0x07;

test = XScan;
test = ~test;

KEY_X = test & 0xf8 ;
KEY_X = KEY_X | test;    //KEY_X接高八位

KEY_Y = 0xff; //置高
if(0xff != (pc = KEY_Y)) //假如說有按鍵按下
{
if(0xff != (pc = KEY_Y)) //假如說有按鍵按下
{
delay_20m();
for(j=0;j<8;j++)
{ //將掃描值與掃描按鍵值比較
if( pc == keyboard_Scan[j] )
{
in = j * 5 + i +1;
flag = 1;
}

if(flag == 1)
{
while( KEY_Y == keyboard_Scan[j] ); //松手檢測
delay_20m();
break;
}

}
}
if(flag == 1)
break;
}
XScan >>= 1; //左移一位
}

keyboard_cursor_flash();

}
time_out = 0; //清空計時
return in;
}

uchar keyboard_wake(void)
{
uchar i, pc, flag = 0;
uchar XScan=0;
uchar in = 0;
uchar test;

#ifdef KEY_X_IS_HIGH
KEY_X &= 0x07; //清空高5位    0000 0111
XScan = 0x80; //    1000 0000
// XScan = 0x08;
#endif
// #ifdef KEY_X_IS_LOW
// KEY_X &= 0xe0; //清空低5位    1110 0000
// XScan = 0x01; //    0000 0001
// #endif
for(i=0;i<5;i++)
{
KEY_X &=0x07;

test = XScan;
test = ~test;

KEY_X = test & 0xf8 ;
KEY_X = KEY_X | test;    //KEY_X接高八位

KEY_Y = 0xff; //置高
if(0xff != (pc = KEY_Y)) //假如說有按鍵按下
{
return 1;
}
XScan >>= 1; //左移一位
}
return 0;
}

/* ========= 光標閃爍 ========= */
void keyboard_cursor_flash(void)
{

if(flash_count>=10)
{
if(gb_flag==0)
{
lcd_yline(8*(count-1),16*hang+0,16*hang+15,1);
gb_flag=1;
}
else
{
lcd_yline(8*(count-1),16*hang+0,16*hang+15,0);
gb_flag=0;
}
flash_count=0;
}
//鍵盤空閑監控
if(byte_read(ADD_TIMEOUT, 0)<time_out/5600)
{
time_out = 0;
mode_sleep();
}
}

uchar keyboard_output()
{
uchar result = keyboard();
uchar num0=0xff;
switch( result )
{
case 1:
shift=~shift;

num0 = 0 ;
break;
case 4:
//上翻
num0 = 3 ;
break;
case 6:
num0 = '(';
break;
case 7:
num0 = ')';
break;
case 8:
//地址左移一位
num0 = 5 ;
break;
case 9:
//下翻
num0 = 6 ;
break;
case 10:
//地址右移一位
num0 = 7 ;
break;
case 17:
//hyp?
num0 = 14 ;
break;
//數字鍵
case 36:
num0='0';
break;

case 31:
//lcd_write_str("1");
num0 = '1';
break;
case 32:
//lcd_write_str("2");
num0 = '2';
break;
case 33:
//lcd_write_str("3");
num0 = '3';
break;

case 26:
num0='4';
break;
case 27:
num0='5';
break;
case 28:
num0='6';
break;
case 21:
num0='7';
break;
case 22:
num0='8';
break;
case 23:
num0='9';
break;
case 37:
num0='.';
break;
//+-x/=
case 29:
num0='*';
break;
case 30:
num0='/';
break;
case 34:
num0='+';
break;
case 35:
num0='-';
break;
case 40:
num0='=';
//等于？
break;

case 24:
//刪掉上一位，指針指向上一位？
num0 = 18 ;
break;
case 25:
//刪掉整個字符串，指針指向該行起點？
num0 = 19 ;
break;
case 38:
//ans?
num0 = 20 ;
break;
case 39:
//copy?
num0 = 21 ;
break;
}

if(shift==0)
{
switch(result)
{
case 2:
//返回菜單？
num0 = 1;
break;
case 3:
num0 = 2;
break;
case 5:
//清屏，打開背光
num0 = 4;
break;
case 11:
//lcd_write_str("abs(");
num0 = 8;  //絕對值
break;
case 12:
//lcd_write_str("^2");
num0 = 9;  //平方
break;
case 13:
//lcd_write_str("^(");
num0 = '^';  //方
break;
case 14:
//lcd_write_str("^(-1)");
num0 = 11;  //倒數
break;
case 15:
//lcd_write_str("exp(");
num0 = 12;
break;
case 16:
//lcd_write_str("10^(");
num0 = 13;
break;
case 18:
//lcd_write_str("sin(");
num0 = 15;
break;
case 19:
//lcd_write_str("cos(");
num0 = 16;
break;
case 20:
//lcd_write_str("tan(");
num0 = 17;
break;

// case 31:
// num0='1';
// break;
// case 32:
// num0='2';
// break;
// case 33:
// num0='3';
// break;

}

}
else
{
switch(result)
{
case 2:
//返回設置？
num0 = 23;
break;
case 3:
num0 = 'e';
break;
case 5:
//清屏，關閉背光
//lcd_clear();
//關閉背光？
num0 = 24;
break;
case 11:
num0 = 'i';
break;
case 12:
//lcd_write_str("^(1/2)");
num0 = 25;
break;
case 13:
//lcd_write_str("^(1/");
num0 = 26;
break;
case 14:
//lcd_write_str("!");
num0 = '!';
break;
case 15:
//lcd_write_str("ln(");
num0 = 27;
break;
case 16:
//lcd_write_str("log(");
num0 = 28;
break;
case 18:
//lcd_write_str("asin(");
num0 = 29;
break;
case 19:
//lcd_write_str("acos(");
num0 = 30;
break;
case 20:
//lcd_write_str("atan(");
num0 = 31;
break;
case 31:
//lcd_write_str("x");
num0 = 'x';
break;
case 32:
//lcd_write_str("y");
num0 = 'y';
break;
case 33:
//lcd_write_str("z");
num0 = 'z';
break;
case 37:
num0 = 32;
break;
}
}
if(result != 1)
shift=0;

if(shift == 0)
bl_bright_change(byte_read(ADD_BRIGHT, 0)); //還原亮度設定
else
bl_bright_change(byte_read(ADD_SHIFTSIGN, 0)); //shift亮度設定

/////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////
if(num0==24)                            //on和off
{
TR0=0;
lcd_clear();
lcd_write_pic(0, 0, welcome_pic, 128, 64); /*波音會徽*/

lcd_set_pos(1, 4);
lcd_write_str("計算器"); /*計算器*/

lcd_set_pos(2, 4);
lcd_write_str("開心波音"); /*開心波音*/

delay_2s();
lcd_clear();
lcd_clear_pic(); /*清屏*/
bl_bright_change(0); //關燈
while(num0!=4)
num0 = keyboard_output();
bl_bright_change(byte_read(ADD_BRIGHT, 0)); //還原亮度設定

reset(); //復位
}
/////////////////////////////////////////////////////////////////////////
else if(num0==23)                            //set
{
byte_write(ADD_PROG_STATUS, SET ,0); //寫入設置
reset(); //復位
}

////////////////////////////////////////////////////////////////////////
else if(num0==1)                            //mode
{
byte_write(ADD_PROG_STATUS, MODE ,0); //寫入菜單
reset(); //復位
}
/////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////
return num0;
}

void about()
{
TR0=0;
lcd_clear();
lcd_write_pic(0, 0, welcome_pic, 128, 64); /*波音會徽*/

lcd_set_pos(1, 4);
lcd_write_str("計算器"); /*計算器*/

lcd_set_pos(2, 4);
lcd_write_str("開心波音"); /*開心波音*/
while(keyboard_wake());
}

ID:352458 · 發表于 2020-4-3 20:29

厲害了，這些不僅僅是一個傳統意義上的科學計算器了。他是專業級別的計算器了。同學有一塊專業級別可以解自控方程的要120大洋的。

ID:163090 · 發表于 2020-4-5 17:06

liu5678 發表于 2020-4-3 20:29
厲害了，這些不僅僅是一個傳統意義上的科學計算器了。他是專業級別的計算器了。同學有一塊專業級別可以解自 ...

哥們有沒興趣做一個給大家分享一下呢

ID:91165 · 發表于 2020-4-7 08:06

51也做得這么強大。樓主厲害

ID:281879 · 發表于 2020-4-7 13:04

太牛了學習到了

ID:458705 · 發表于 2020-4-8 15:35

一個字，牛！
兩個字，特牛！
三個字，犇！

ID:87631 · 發表于 2020-4-12 14:16

這人真的是太牛了

ID:704585 · 發表于 2020-4-14 14:29

感謝樓主分享，學習一下。

ID:413383 · 發表于 2020-4-14 22:57

這人真的是太牛了,感覺太難了

ID:17204 · 發表于 2020-4-15 15:47

好難，只有吃透51才能做出來，向大佬看齊，努力學習中。。。

ID:701252 · 發表于 2020-10-17 09:35

啥也不說了！謝謝樓主分享！

ID:88256 · 發表于 2020-10-17 10:10

那個按鍵帽有地方買的嗎？

ID:557411 · 發表于 2021-3-20 16:58

這個做得太強大了，樓主厲害

ID:894410 · 發表于 2021-3-20 19:05

注意到了鍵帽。。哈哈

ID:59830 · 發表于 2021-3-20 19:09

非常不錯，多級LCD顯示菜單.
程序結構清晰. 值得大家學習. 謝謝！

ID:358564 · 發表于 2021-3-20 19:29

感謝樓主分享，學習一下。

ID:891775 · 發表于 2021-5-3 11:34

想問一下，判斷運算符優先級的代碼應該怎么寫呀

ID:838718 · 發表于 2021-7-21 20:11

膜拜一下，有機會挑戰一下自己也搞一個。

ID:507641 · 發表于 2021-7-31 18:04

很好的學習分享實例51.對于按鍵的處理如果優化才是好產品

ID:507641 · 發表于 2021-7-31 18:17

功能強大。只是DS1302走時誤差大了些。

ID:137590 · 發表于 2021-8-10 17:33

。因此在軟件上需要做到語法識別、優先級順序、括號嵌套等功能。計算器擁有普通計算(表達式與函數識別、計算)、計算結果存儲/回看、復數計算、矩陣運算、函數圖形、解方程、統計、最小二乘法求回歸直線、一階常微分方程、單位，進制轉換、定積分、求導等功能。有節電模式，5分鐘不輸入自動關機，液晶屏亮度5級可調。

ID:137590 · 發表于 2021-8-10 17:34

一個字，牛！
兩個字，特牛！
三個字，犇！

ID:137590 · 發表于 2021-10-9 21:12

好難，只有吃透51才能做出來，向大佬看齊，努力學習中。。。

ID:970860 · 發表于 2021-10-10 06:56

都是大神

ID:648615 · 發表于 2021-10-10 23:13

真提我女朋友歷害，很有用，謝謝樓主

ID:62246 · 發表于 2021-10-11 07:48

厲害，厲害，大佬級人物。

ID:86450 · 發表于 2021-10-11 08:13

按鍵帽，在哪里買的？

ID:304725 · 發表于 2021-10-24 23:16

有原理圖嗎

ID:974131 · 發表于 2021-11-6 17:55

論壇有你更精彩，謝謝！

ID:1003827 · 發表于 2022-1-29 20:33

大佬就是大牛啊

ID:430492 · 發表于 2022-1-30 10:17

這個設計真是太牛掰了！動手能力也很牛掰！

ID:507641 · 發表于 2022-3-18 10:40

單片機菜鳥丿發表于 2020-4-5 17:06
哥們有沒興趣做一個給大家分享一下呢

大伽分享吧

ID:22218 · 發表于 2022-3-19 04:27

2732803160 發表于 2021-5-3 11:34
想問一下，判斷運算符優先級的代碼應該怎么寫呀

這個我想可以按C語言內置的功能

ID:195496 · 發表于 2022-5-8 07:34

真是大神級的人物

ID:1042173 · 發表于 2022-9-2 00:36

樓主是乍作出實物來的？？？有電路圖嗎？？光有程序也不行呀——起好多彎路的——

ID:74784 · 發表于 2022-9-3 13:34

曾經見到過高人用51單片機
做的彩色屏俄羅斯方塊游戲。

ID:961114 · 發表于 2022-9-15 10:26

大神辛苦了，幫用屠龍刀三-STC32G12K128核心功能實驗板去改或開天斧三-STC8H8K64U核心功能實驗板去改！ STC將提供贊助

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