写一段单片机程序使LCD1602液晶品示（姓名＋学号)，按下 K1，LCD1602液晶屏第一行显示自己姓名拼音首宇母。按下k2，LCD1602液晶屏第二行显示自己的学号。按下k3，清屏。

以下是单片机程序：

#include <reg52.h>
#include <intrins.h>

#define LCD1602_DB P0
sbit LCD1602_RS = P2^6;
sbit LCD1602_RW = P2^5;
sbit LCD1602_E = P2^7;
sbit K1 = P3^0;
sbit K2 = P3^1;
sbit K3 = P3^2;

void delay(unsigned int i)
{
while(i--);
}

void write_com(unsigned char com)
{
LCD1602_RS = 0;
LCD1602_RW = 0;
LCD1602_DB = com;
LCD1602_E = 1;
_nop_();
_nop_();
LCD1602_E = 0;
}

void write_data(unsigned char dat)
{
LCD1602_RS = 1;
LCD1602_RW = 0;
LCD1602_DB = dat;
LCD1602_E = 1;
_nop_();
_nop_();
LCD1602_E = 0;
}

void init_lcd1602()
{
write_com(0x38);
write_com(0x0c);
write_com(0x06);
write_com(0x01);
}

void main()
{
unsigned char name[] = "Your Name";
unsigned char number[] = "Your Number";
unsigned char i;

init_lcd1602();

while(1)
{
if(K1 == 0)
{
write_com(0x80);
for(i=0; i<9; i++)
{
write_data(name[i]);
}
}

if(K2 == 0)
{
write_com(0xc0);
for(i=0; i<11; i++)
{
write_data(number[i]);
}
}

if(K3 == 0)
{
write_com(0x01);
}
}
}