51单片机密码锁--1、系统上电，液晶显示“password”，输入6位数字密码，然后以10号键作为输入结束键，如果输入密码位数错误，或位数正确但密码错误，在液晶第二行显示“error”,并自动重新进

main.c

#include 
#include "lcd.h"
#include "KeyScan.h"
void delay(uint i);
#define uint unsigned int
#define uchar unsigned char

uchar pw[]={1,2,3,4,5,6}; 
uchar pwnew[]={0,0,0,0,0,0,0,0,0,0}; 
sbit led=P2^0;  

void delay(uint i)
{
	while(i--);
}

void main()
{
	char i,count=0;
	bit pw_flag;  
	LcdInit();       
	delay(20);
	LcdWriteCom(0x80);
	Str_Dis("passworld");
	                       
	P2=0xff; 
	while(1)
	{		
			i=keyscan();  
			if(i==-1) continue; 
			if(i>=0&&i<=9)
			{
				pwnew[count]=i;  
				LcdWriteData(i+0x30);  
				count++;    
				P1=0xf0;
				while(P1!=0xf0);  
			}
			else if(i==10)  
			{
				pw_flag=1;  
			  if(count!=6)
				{
				  	led=0;  
					 LcdWriteCom(0xc0);    
					Str_Dis("error");
				}				
								 		
				else
				{
					for(i=0;i<6