C51 MCU Learning---8*8LED Dot Matrix Screen-EEWORLD

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About 8*8LED dot matrix screen

1.8*8LED dot matrix screen schematic diagram

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74HC595 shifter: serial input >>> parallel output

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LED: Monochromatic light, trichromatic light (red, green, blue –>> multiple colors)

Pitch: The distance between two adjacent points. 2mm=2pitch

Practical application: Advertising

// Turn on the rightmost LED

#include

typedef unsigned char u8;

typedef unsigned int u16;

sbit SCK =P3^6;

sbit RCK =P3^5;

sbit SER =P3^4;

void Hc595SendByte(u8 dat);

void main(void )

{

Hc595SendByte(0x7f);

while(1);

}

void Hc595SendByte(u8 dat)

{

u8 i=0,j=0;

SCK=0;

RCK=0;

for(i=0;i<8;i++)

{

SER=dat>>7;

dat << = 1;

SCK = 1;

j++;

SCK = 0;

}

RCK = 1;

j++;

}

Keywords：C51 Reference address：C51 MCU Learning---8*8LED Dot Matrix Screen

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