1602与单片机（中文）

#include "reg52.h"
#define uchar unsigned char
#define uint unsigned int
#define shuju P1 
sbit RW=P2^1;
sbit RS=P2^2;
sbit EN=P3^3;

void delay(unsigned char temp)
{
   uint i,j;
   for(i=0;i<temp;i++){
      for(j=0;j<120;j++)
 ; }
}

void write(unsigned char numb)
{
  RW=0;
  delay(1);
  shuju&=0x0f;
  shuju|=(numb&0xf0);
  EN=1;
  delay(1);
  EN=0;

  shuju&=0xf0;
  shuju|=(numb&0x0f);
  EN=1;
  delay(1);