LCD Programming using 8051 Microcontroller

Liquid Crystal Display (LCD) is an electronic device, which is frequently used in many applications for displaying the information in a text or image format. The LCD is used for displaying the alphanumeric character on its screen. The LCD display is consists of 8-data lines and 3-control lines which are used for interfacing the LCD display with 8051 microcontroller.

Consider the interfacing of LCD with 8051 Microcontroller using Proteus based simulation is:-

Consider the program to display the "javaTpoint" on LCD display is:-

#include<reg51.h>
#define kam P0
void lcd_initi();
void lcd_dat(unsigned char );
void lcd_cmd(unsigned char );
void delay();
void display(unsigned char *s, unsigned char r)
sbit rs=P2^0;
sbit rw=P2^1;
sbit en=P2^2;
void main()
{
lcd_initi();
lcd_cmd(0x80);
delay(100);
lcd_cmd(0xc0);
display("javaTpoint",10);
while(1);
}
void display(unsigned char *s, unsigned char r)
{
unsignedint w;
for(w=0;w<r;w++)
{
lcd_data(s[w]);
}
}
voidlcd_initi()
{
lcd_cmd(0?01);
delay(100);
lcd_cmd(0?38);
delay(100);
lcd_cmd(0?06);
delay(100);
lcd_cmd(0x0c);
delay(100);
}
voidlcd_dat(unsigned char dat)
{
kam = dat;
rs=1;
rw=0;
en=1;
delay(100);
en=0;
}
}
voidlcd_cmd(unsigned char cmd)
{
kam=cmd;
rs=0;
rw=0;
en=1;
delay(100);
en=0;
}
void delay( unsigned int n)
{
unsignedint a;
for(a=0;a<n;a++);
}

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