Programming of 16X32LED dot matrix display screen based on 51 single chip microcomputer

The 51 MCU 16X32LED dot matrix display screen consists of a MCU minimum system, a row drive circuit 74HC154, and a column drive circuit 74HC595, which can display Chinese characters and numbers. The circuit is simple. 20 Chinese characters are used as display examples in the program. The data includes the 51 MCU C language source program and PROTEUS7.8 simulation source file. The module software and module instruction document are attached to facilitate you to change the display content. The display movement speed can be set in the program.

#include
#define FOSC 12 //Define crystal frequency
#define INIT_TH0 0x3C //Initial value of timer T0
#define INIT_TL0 0xB0
#define TMOD_T00 0x00 //Define T0 as mode 0, GATE=0, C/T=0, 13-bit counter
#define TMOD_T01 0x01 //Define T0 as mode 1, GATE=0, C/T=0, 16-bit counter
#define TMOD_T02 0x02 //Define T0 as mode 2, GATE=0, C/T=0, automatically load 8-bit counter
#define TMOD_T03 0x03 //Define T0 as mode 3, GATE=0, C/T=0, timer 0 is divided into two 8-bit counters, timer 1 stops counting

/*Shortcut definition*/

#define uchar unsigned char
#define uint unsigned int

/************Bit definition****************/
sbit STTP = P2^7;
/************Function declaration****************/
void delay(uint c); //Delay function
void out_rxd(uchar *d); //Chinese character output
/************Chinese character dot matrix****************/
char code hanzi[32][32]={
                        0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, //Display a blank screen. If there is only one word or all the words are moved out, a blank screen must be set
                        0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
                        0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
                          0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,
                        0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, //Display a blank screen. If there is only one word or all the words are removed, a blank screen must be set.
                        0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

/*-- Text: Base --*/
/*-- Songti 12; The corresponding dot matrix under this font is: width x height = 16x16 --*/
0x00,0x88,0x20,0x88,0x20,0x91,0x20,0xA1,0xFF,0xC9,0x2A,0x89,0x2A,0x89,0x2A,0xBF,
0x2A,0x89,0x2A,0x89,0xFF,0xC9,0x20,0xA1,0x20,0x91,0x20,0x88,0x00,0x88,0x00,0x00,
                        
/*-- Text: Yu --*/
/*-- Songti 12; The corresponding dot matrix under this font is: width x height = 16x16 --*/
0x02,0x00,0x02,0x00,0x42,0x00,0x42,0x00,0x42,0x00,0x42,0x00,0x42,0x02,0x42,0x01,0x7F,0xFE,
0x42,0x00,0x42,0x00,0x42,0x00,0x42,0x00,0x42,0x00,0x02,0x00,0x02,0x00,0x00,0x00,0x00,

/*-- Text: 5 --*/
/*-- Songti 12; The corresponding dot matrix under this font is: width x height = 8x16 --*/
0x00,0x00,0x1F,0x98,0x10,0x84,0x11,0x04,0x11,0x04,0x10,0x88,0x10,0x70,0x00,0x00,                

/*-- Text: 1 --*/
/*-- Songti12; The corresponding dot matrix under this font is: width x height = 8x16 --*/
0x00,0x00,0x08,0x04,0x08,0x04,0x1F,0xFC,0x00,0x04,0x00,0x04,0x00,0x00,0x00,0x00,0x00,

/*-- Text: Single --*/
/*-- Songti12; The corresponding dot matrix under this font is: width x height = 16x16 --*/
0x00,0x08,0x00,0x08,0x1F,0xC8,0x92,0x48,0x52,0x48,0x32,0x48,0x12,0x48,0x1F,0xFF,
0x12,0x48,0x32,0x48,0x52,0x48,0x92,0x48,0x1F,0xC8,0x00,0x08,0x00,0x08,0x00,0x00,

/*-- Text: 片 --*/
/*-- Songti 12; The corresponding dot matrix under this font is: width x height = 16x16 --*/
0x00,0x00,0x00,0x01,0x00,0x06,0x7F,0xF8,0x04,0x40,0x04,0x40,0x04,0x40,0x04,0x40,
0x04,0x40,0xFC,0x40,0x04,0x7F,0x04,0x00,0x04,0x00,0x04,0x00,0x00,0x00,0x00,0x00,0x00,
                        
/*-- Text: 机 --*/
/*-- 宋体12; The corresponding dot matrix under this font is: width x height = 16x16 --*/
0x08,0x20,0x08,0xC0,0x0B,0x00,0xFF,0xFF,0x09,0x00,0x08,0xC1,0x00,0x06,0x7F,0xF8,
0x40,0x00,0x40,0x00,0x40,0x00,0x7F,0xFC,0x00,0x02,0x00,0x02,0x00,0x1E,0x00,0x00,

/*-- Text: --*/
/*-- Songti12; The corresponding dot matrix under this font is: width x height = 16x16 --*/
0x00,0x00,0x1F,0xFE,0x30,0x84,0xD0,0x84,0x10,0x84,0x10,0x84,0x1F,0xFE,0x02,0x00,
0x0C,0x00,0xF1,0x00,0x10,0xC2,0x10,0x01,0x10,0x02,0x1F,0xFC,0x00,0x00,0x00,0x00,0x00,
/*-- Text: 1 --*/
/*-- Songti12; The corresponding dot matrix under this font is: width x height = 8x16 --*/
0x00,0x00,0x08,0x04,0x08,0x04,0x1F,0xFC,0x00,0x04,0x00,0x04,0x00,0x00,0x00,0x00,
                        
/*-- Text: 6 --*/
/*-- Songti12; The corresponding dot matrix under this font is: width x height = 8x16 --*/
0x00,0x00,0x07,0xF0,0x08,0x88,0x11,0x04,0x11,0x04,0x18,0x88,0x00,0x70,0x00,0x00,

/*-- Text: × --*/
/*-- Songti12; The corresponding dot matrix under this font is: width x height = 16x16 --*/
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x10,0x10,0x08,0x20,0x04,0x40,0x02,0x80,
0x01,0x00,0x02,0x80,0x04,0x40,0x08,0x20,0x10,0x10,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

/*-- Text: 3 --*/
/*-- Songti12; The corresponding dot matrix under this font is: width x height = 8x16 --*/
0x00,0x00,0x0C,0x18,0x10,0x04,0x11,0x04,0x11,0x04,0x12,0x88,0x0C,0x70,0x00,0x00,

                        
/*-- Text: 2 --*/
/*-- Songti12; The corresponding dot matrix under this font is: width x height = 8x16 --*/
0x00,0x00,0x0E,0x0C,0x10,0x14,0x10,0x24,0x10,0x44,0x11,0x84,0x0E,0x0C,0x00,0x00,

                                
/*-- Text: Dot --*/
/*-- Songti 12; The corresponding dot matrix under this font is: width x height = 16x16 --*/
0x00,0x01,0x00,0x02,0x03,0xEC,0x02,0x20,0x02,0x20,0x02,0x28,0xFE,0x26,0x12,0x20,
0x12,0x28,0x12,0x26,0x12,0x20,0x13,0xE0,0x10,0x08,0x10,0x07,0x00,0x00,0x00,0x00,
                        
/*-- Text: Matrix --*/
/*-- Songti 12; The corresponding dot matrix under this font is: width x height = 16x16 --*/
0x00,0x00,0x7F,0xFF,0x40,0x10,0x44,0x08,0x5B,0x10,0x60,0xE0,0x10,0x10,0x13,0x10,
0x1D,0x10,0xF1,0x10,0x17,0xFF,0x11,0x10,0x11,0x10,0x11,0x10,0x10,0x10,0x00,0x00,
                        
/*-- Text: Display --*/
/*-- Songti 12; The corresponding dot matrix under this font is: width x height = 16x16 --*/
0x00,0x02,0x00,0x42,0x00,0x22,0x7F,0x1A,0x49,0x02,0x49,0xFE,0x49,0x02,0x49,0x02,
0x49,0x02,0x49,0xFE,0x49,0x02,0x7F,0x0A,0x00,0x12,0x00,0x62,0x00,0x02,0x00,0x00,

/*-- Text: 示 --*/
/*-- 宋体12; The corresponding dot matrix under this font is: width x height = 16x16 --*/
0x02,0x04,0x02,0x08,0x42,0x10,0x42,0x60,0x42,0x00,0x42,0x02,0x42,0x01,0x43,0xFE,
0x42,0x00,0x42,0x00,0x42,0x00,0x42,0x40,0x42,0x20,0x02,0x10,0x02,0x0C,0x00,0x00,

/*-- Text: Screen --*/
/*-- Songti 12; The corresponding dot matrix under this font is: width x height = 16x16 --*/
0x00,0x02,0x00,0x0C,0x7F,0xF0,0x48,0x20,0x49,0x21,0x4D,0x26,0x4B,0xF8,0x49,0x20,
0x49,0x20,0x49,0x20,0x4B,0xFF,0x4D,0x20,0x79,0x20,0x00,0x20,0x00,0x00,0x00,0x00,                

/*-- Text: 程 --*/
/*-- 宋体12; The corresponding dot matrix under this font is: width x height = 16x16 --*/
0x24,0x10,0x24,0x60,0x25,0x80,0x7F,0xFF,0xC4,0x80,0x44,0x60,0x00,0x02,0x7C,0x92,
0x44,0x92,0x44,0x92,0x44,0xFE,0x44,0x92,0x44,0x92,0x7C,0x92,0x00,0x82,0x00,0x00,
/*-- Text: 序 --*/
/*-- 宋体12; The corresponding dot matrix under this font is: width x height = 16x16 --*/
0x00,0x02,0x00,0x0C,0x3F,0xF0,0x20,0x00,0x20,0x80,0x20,0x80,0x28,0x80,0xA8,0x82,
0x6A,0x81,0x29,0xFE,0x2A,0x80,0x2C,0x80,0x28,0x80,0x20,0xA0,0x20,0xC0,0x00,0x00,

/*-- Text: Set --*/
/*-- Songti 12; The corresponding dot matrix under this font is: width x height = 16x16 --*/
0x02,0x00,0x02,0x00,0x42,0x00,0x33,0xFC,0x00,0x09,0x02,0x11,0x05,0x02,0x79,0xC2,
0x41,0x34,0x41,0x08,0x41,0x14,0x79,0x62,0x05,0x82,0x04,0x01,0x04,0x01,0x00,0x00,

/*-- Text: 计 --*/
/*-- 宋体12; The corresponding dot matrix under this font is: width x height = 16x16 --*/
0x02,0x00,0x02,0x00,0x42,0x00,0x33,0xFE,0x00,0x04,0x02,0x08,0x02,0x00,0x02,0x00,
0x02,0x00,0xFF,0xFF,0x02,0x00,0x02,0x00,0x02,0x00,0x02,0x00,0x02,0x00,0x00,0x00,

/*-- Text: and --*/
/*-- Songti 12; The corresponding dot matrix under this font is: width x height = 16x16 --*/
0x00,0x10,0x00,0x10,0x07,0x10,0xF9,0x10,0x11,0x10,0x11,0x10,0x11,0x10,0x11,0x10,
0x11,0x10,0x11,0x12,0x11,0x01,0x11,0x02,0x11,0xFC,0x10,0x00,0x00,0x00,0x00,0x00,

/*-- Text: Imitation --*/
/*-- Songti 12; The corresponding dot matrix under this font is: width x height = 16x16 --*/
0x00,0x80,0x01,0x00,0x06,0x00,0x1F,0xFF,0xE0,0x01,0x10,0x02,0x10,0x0C,0x1F,0xF0,
0x91,0x00,0x71,0x02,0x11,0x01,0x11,0x02,0x11,0xFC,0x10,0x00,0x10,0x00,0x00,0x00,

/*-- Text: True --*/
/*-- Songti 12; The corresponding dot matrix under this font is: width x height = 16x16 --*/
0x00,0x08,0x20,0x08,0x20,0x09,0x2F,0xFA,0x2A,0xAC,0x2A,0xA8,0x2A,0xA8,0xFA,0xA8, 0x2A,0xA8,0x2A,
0xA8,0x2A,0xAC,0x2F,0xFA,0x20,0x09,0x20,0x08,0x00,0x08,0x00,0x00,
                

                                                        
                                
                        0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, //Display a blank screen. If there is only one word or all the words are moved out, a blank screen must be set
                        0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
                        0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,
                          0x00,0x00,0x00,0x00,0x00,0x00,

                };

/************Main function***************/
void main()
{
        uchar i,j,k; //i: display cycle of each word; j: display code of each word divided by 2; k: refresh times of each column
        uint b=0; //Display offset control. char type can only display up to 14 Chinese characters + one blank character
        uchar a; //Control movement interval time
        SCON = 0x00;
        while(1)
        {        
          j=0;
          if(a>6) //Move interval time; value 0-20
                {
                  a=0;
                  b+=2;
                  if(b>=700) //Display to the last word, turn back to display, judgment value = number of words*32
                   {
                     b=0;
                   }        
                }
            for(i=0;i<16;i++)
           {
                   P1=i;

                 for(k=0;k<1;k++)
                     {        
                        STTP = 0;
                        out_rxd(&hanzi[3][j+b+1]);
                        out_rxd(&hanzi[3][j+b]);
                        out_rxd(&hanzi[2][j+b+1]);
                        out_rxd(&hanzi[2][j+b]);
                        out_rxd(&hanzi[1][j+b+1]);
                        out_rxd(&hanzi[1][j+b]);
                        out_rxd(&hanzi[0][j+b+1]);
                        out_rxd(&hanzi[0][j+b]);
                        STTP = 1;
                        delay(15);
                        
                  }
                 j=j+2;
           }
           a++;
            }

}

/************Sub-function**************/

void delay(uint c)
        {
          int i,j;
          for(i=0;i                for(j=0;j<10;j++)
                        ;


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