16x2 LCD interfacing with 8051 Microcontroller

Copy and work the circuit in proteus, write the code in keil software

Program 1:

#include<reg51.h>
sfr LCD = 0x90;     // Port 1 SFR
sbit RS =  P3^5;   
sbit EN =  P3^4;
sbit RW =  P3^6;

void Delay(unsigned int itime);
void main()
{
P1=0x38;
RS=0;
RW=0;
EN=1;
Delay(5);
EN=0;

P1=0x01;
RS=0;
RW=0;
EN=1;
Delay(5);
EN=0;

P1=0x06;
RS=0;
RW=0;
EN=1;
Delay(5);
EN=0;

P1=0x0E;
RS=0;
RW=0;
EN=1;
Delay(5);
EN=0;

P1=0x80;
RS=0;
RW=0;
EN=1;
Delay(5);
EN=0;


P1='H';
RS=1;
RW=0;
EN=1;
Delay(5);
EN=0;

P1='E';
RS=1;
RW=0;
EN=1;
Delay(5);
EN=0;

P1='L';
RS=1;
RW=0;
EN=1;
Delay(5);
EN=0;

P1='L';
RS=1;
RW=0;
EN=1;
Delay(5);
EN=0;

P1='O';
RS=1;
RW=0;
EN=1;
Delay(5);
EN=0;
}
void Delay(unsigned int itime)
{
    unsigned int i,j;
    for(i=0;i<1275;i++)
    for(j=0;j<itime;j++);
}

Program 2

#include<reg51.h>

#include<string.h>

sfr LCD = 0x90;  

sbit RS =  P3^5;

sbit EN =  P3^4;

sbit RW =  P3^6;

void lcdcmd(unsigned char value);

void lcddata(unsigned char value);

void lcdstr(unsigned char msg[]);

void Delay(unsigned int itime);

void main()

{

lcdcmd(0x38);

    Delay(1);

    lcdcmd(0x01);

    Delay(1);

    lcdcmd(0x06);

    Delay(1);

lcdcmd(0x0C);

Delay(1);

    lcdcmd(0x80);

Delay(1);

    lcdstr("Hello World");

while(1);

}

void lcdcmd(unsigned char value)

{

    LCD = value;

    RS = 0;

    RW = 0;

    EN = 1;

    Delay(1);

    EN = 0;

}

void lcddata(unsigned char value)

{

    LCD = value;

    RS = 1;

    RW = 0;

    EN = 1;

    Delay(1);

    EN = 0;

}

void Delay(unsigned int itime)

{

    unsigned int i,j;

    for(i=0;i<1275;i++)

    for(j=0;j<itime;j++);

}

void lcdstr(unsigned char msg[])

{

    unsigned short int len,i;

    len = strlen(msg);

    for(i=0;i<len;i++)

    {

        lcddata(msg[i]);

        Delay(1);

    }

}