LCD1602液晶显示屏通过三根信号线和八根数据线和MCU连接

RS和RW控制数据是读取还是写入，是命令还是数据，一般液晶显示屏只写数据，所以RS和RW为0表示写命令，RS为1 RW为0表示写数据

之后对显示屏初始化之后就可以使用LCDE线即可将数据写到显示屏了

示例代码如下

#include <reg52.h>

#define LCD P0

sbit RS = P2^6;

sbit RW = P2^5;

sbit LCDE = P2^7;

unsigned char datas[] = "Hello World";

void writecom(unsigned char i);

void writedata(unsigned char i);

void Delay(unsigned int a);

void main(void){

unsigned char num;

//初始化LCD1602

writecom(0x38);

writecom(0x0c);

writecom(0x06);

writecom(0x01);

writecom(0x80);

for(num = 0;num < 11;num++){

writedata(datas[num]);

}

while(1){

}

}

void writecom(unsigned char i){

RS = 0;

RW = 0;

LCD = i;

Delay(10);

LCDE = 1;

Delay(10);

LCDE = 0;

}

void writedata(unsigned char i){

RS = 1;

RW = 0;

LCD = i;

Delay(10); //这里需要延时时间长一点

LCDE = 1;

Delay(10);

LCDE = 0;

}

void Delay(unsigned int a){

unsigned char b;

for(;a>0;a--)

{

for(b=110;b>0;b--);

}

}