void main(void)     //main funciton
{
	Init_Sys();
	while(1)Sound_Alarm();
}

9free:
I don't why I always run away from PIC Micro-controller families.
AVR all the way!!!!

#include<reg52.h>

#define SYNC_BYTE 0xAA
#define ALARM1_ADDR 0xA1
#define TRIGGER 0x01
//XTAL Value = 11.0592mhz
sfr T2MOD = 0xC9; 

//Input/Output pin definitions
sbit LED = P2^0;
sbit AlarmInput = P3^2;

void Send_Byte(unsigned char);
void Sys_BaudRate(unsigned int);
void Delay_Ms(unsigned char);
void Delay_Sec(unsigned char);

//Function prototypes
void Sound_Alarm(void);	 										 
void Delay(unsigned int);
//**********************************
void EXT0_ISR(void) interrupt 0	//Interrupt function for processing 
{					//Intrusion detection
	EA = 0;
	LED = 0;
	Delay(5);
	while(!AlarmInput)Sound_Alarm();  //Confirm that the PIR has a valid 
	LED=1;
	EA = 1;				       //detection; call the alarm function
}
//*********************
void Send_Msg(unsigned char d)
{
		Send_Byte(SYNC_BYTE);
		Send_Byte(SYNC_BYTE);
		Delay(5);
		Send_Byte(ALARM1_ADDR);
		Delay(5);
		Send_Byte(d);
		Delay(5);
		Send_Byte(d+ALARM1_ADDR);
		Delay(5);	
}
//*******************
void Send_Byte(unsigned char c)
{
	ES = 0;
	SBUF=c;
	while(!TI);
	TI=0;
	ES = 1;
}
//******************
void Serial_Init(void)
{
  	TMOD = 0x20;
	SCON = 0x50;
	PCON |= 0x80;
	Sys_BaudRate(1200);
	ES = 0;
	TI = 0;
	RI = 0;
	TR1 = 1;
}
//****************************
void Sys_BaudRate(unsigned int baud)
{   		
	switch (baud)
	{
	   	case 300:{TH1 = 0x40;TL1 = 0x40;break;} 
		case 600:{TH1 = 0xA0;TL1 = 0xA0;break;} 
		case 1200:{TH1 = 0xD0;TL1 = 0xD0;break;}
		case 2400:{TH1 = 0xE8;TL1 = 0xE8;break;}
		default:{TH1 = 0xD0;TL1 = 0xD0;break;}
	}
}
//***********************************
void Sound_Alarm(void)      
{
	unsigned char i;
	for(i=0;i<50;i++){Send_Msg(TRIGGER);Delay_Ms(12);}			
}
//***************************
void Delay(unsigned int x)     //general purpose delay fucntion
{
	unsigned int z;
	while(x)
	{
	for(z=0;z<112;z++);
	x--;
	}
}
//*****************************
void Delay_Ms(unsigned char t)
{
 	while(t--)Delay(1);
}
//*********************
void Delay_Sec(unsigned char t)
{
 	unsigned int T=1000;

	while(t--)
	{
		while(T--)
		{
			Delay_Ms(1);
		}
		T=1000;
	}
}
//*******************************
void Init_Sys(void)         //system initialization function. it
{			   //all hardware units needed by our design
 	EA = 0;
	Serial_Init();
	AlarmInput = 1;	
	EX0 = 1;
	IT0 = 1;
	IE0 = 0;					   				   
	EA = 1;
}
//**************************************
void main(void)     //main funciton
{
	Init_Sys();
	while(1);//Sound_Alarm();
}

#include<reg52.h>

#define SYNC_BYTE 0xAA //preamble byte for syncing the tx and rx
#define REMOTE_ADDR 0xA0
#define ALARM1_ADDR 0xA1
#define ALARM2_ADDR 0xA2
#define SMOKE_SENSOR1_ADDR 0xA3
#define SMOKE_SENSOR2_ADDR 0xA4
#define TRIGGER 0x01
#define Alarm_Off 0x02
#define Engage 0x03
#define BASE_ADDR 0xA5

sbit LED = P2^1;
sbit Alarm = P2^0;
sbit AlarmKey = P2^2;
sbit RX_PIN = P3^0;

void Sys_BaudRate(unsigned int);
void Delay(unsigned int);
void Delay_Ms(unsigned char);
void Get_Msg(void);
void Send_Msg(unsigned char,unsigned char);
unsigned char Get_Byte(void);
void Sound_Alarm(void);
void Delay_Sec(unsigned char);

volatile bit SenseFlag;

//*****************************
void SERIAL_ISR(void) interrupt 4 
{
 	ES = 0;
	Get_Msg();
	ES=1;
}
//****************
void Get_Msg(void)
{
 	unsigned char addr,dat,chk;
	
	RI = 0;
	addr = Get_Byte();
	dat = Get_Byte();
	chk = Get_Byte();

		if((addr==ALARM1_ADDR)||(addr==ALARM2_ADDR))
		{
			if(((dat+addr)==chk)&&(SenseFlag==1))Sound_Alarm();
			else if(SenseFlag==0)(Alarm=0);
		}
		else if(addr==REMOTE_ADDR)
		{
			if((dat+addr)==chk)
			{
				if(dat==Engage)
				{
					SenseFlag=~SenseFlag;
					if(SenseFlag==1)
					{
						Alarm=1;
						Delay_Sec(1);
						Alarm=0;
						Delay_Sec(1);
						Alarm=1;
						Delay_Sec(1);
						Alarm=0;
					}
					else {Alarm=1;Delay_Sec(1);}
				}
				else if(dat==Alarm_Off){Alarm=0;Delay_Sec(1);}
			}

		}
		else if((addr==SMOKE_SENSOR1_ADDR)||(addr==SMOKE_SENSOR2_ADDR)){;}
}
//**********************
unsigned char Get_Byte(void)
{
	while(!RI);
	RI= 0;
	return(SBUF);			
}
//*********************
/*void Send_Msg(unsigned char DAT,unsigned char ADD)
{
	;//Reserved for future sending of SMS to owner.
}*/
//******************
void Sound_Alarm(void)
{
 	Alarm=1;
}
//******************
void Serial_Init(void)
{
  	TMOD = 0x20;
	SCON = 0x50;
	PCON |= 0x80;
	Sys_BaudRate(1200);
	ES = 1;
	TI = 0;
	RI = 0;
	TR1 = 1;
}
//****************************
void Sys_BaudRate(unsigned int baud)
{   		
	switch (baud)
	{
	   	case 300:{TH1 = 0x40;TL1 = 0x40;break;} 
		case 600:{TH1 = 0xA0;TL1 = 0xA0;break;} 
		case 1200:{TH1 = 0xD0;TL1 = 0xD0;break;}
		case 2400:{TH1 = 0xE8;TL1 = 0xE8;break;}
		default:{TH1 = 0xD0;TL1 = 0xD0;break;}
	}
}
//***********************
void Delay(unsigned int x)     //general purpose delay fucntion
{
	unsigned int z;
	while(x)
	{
	for(z=0;z<112;z++);
	x--;
	}
}
//*****************************
void Delay_Ms(unsigned char t)
{
 	while(t--)Delay(1);
}
//******************
void Delay_Sec(unsigned char t)
{
 	unsigned int T=1000;

	while(t--)
	{
		while(T--)
		{
			Delay_Ms(1);
		}
		T=1000;
	}
}
//*********************
void Sys_Init(void)
{ 
	Alarm=0;
	EA = 0;
	SenseFlag=1;	
	AlarmKey = 1;
	Serial_Init();
	LED = 1;
	EA = 1;
}
//*******************
void main(void)
{
 	Sys_Init();
	while(1)
	{
		LED=~LED;
		Delay_Sec(1);	
	}
}

nisol:
(1) keep copper tracks between components as short as possible. This would reduce resistance and stray inductance
(common causes of unwanted results in electronics circuit design)

nisol:
(2) learn how to use the "ground pour" tool in your PCB design software. It eliminates spaghetti like ground connections in your design
and more importantly it reduces noise due to track resistance and stray inductance.

nisol:
(3) if you pcb design software is quite popular, you can visit youtube for tutorial videos. You would be designing like a pro in no long time.
PCB price depends on availability. 4ft by 4ft goes for between =N=3,000 to =N=4,000

cloudstar:

Another one of the copy and paste Muslims. Welcome to the thread!. The context of verses in the Quran is clearly explained in the Hadith and it tells you why. If you want me to engage you, I will be happy to

usermane:

Also i recommend three books for you:

1. Hadith: A Re-evaluation
By Kassim Ahmed.

2. The Qur'an: Sufficient as a Source of Islamic Legislation.
By Dr. Ahmed Subhy Mansour.

3. Hadith As Scripture.
By Aisha Musa.

All are available in pdf on google, for free.

cloudstar:
Since you wanted a verse from the Quran to prove instruction to kill apostates, here you go for your reading pleasure
Surah (4:89) - "They wish that you should disbelieve as they disbelieve, and then you would be equal; therefore take not to yourselves friends of them, until they emigrate in the way of God; then, if they turn their backs, take them, and slay them wherever you find them; take not to yourselves any one of them as friend or helper."

o.s horlabyC:

Some1 once told me that if one is to live by all islamic do's and don'ts in this our environment,it's gonna be very hard to be successful........

o.s horlabyC:
In Q2 v 275 ,Allah says : "Those who consume interests cannot stand on the day of resurrection except as one stands as being beaten by satan into insanity.............
My question now is ; Does that verse affects muslims working in banks? Because definitely,we all know banking is all about interest (except some Islamic banks of course). Please I need knowledged views on the issue. Jazakumullahu khairan as u comment

rationalmind:
Except that no one says anything is a product of chance

Mr Troll: there is no contradiction there, except in your brain.

rationalmind:

Hehehe, and with that same human severely limited knowledge, you claim the universe must have had a creator. Keep shooting yourself in the foot

Mr Troll: ok. So you dont accept the law? But you referenced it?