WEEK 5

LITERATURE REVIEW

This chapter discusses about the theory and software that are use in the project. There are three main theories in this project that are the theories of microcontrollers, Proteus VSM 7.0 and also PICC Lite Compiler.

Microcontroller

        Microcontrollers can be found in any products these days. For example modern washing machine in our house that consists of timer, button and LED contains a microcontroller. All modern cars contain microcontroller. Digital electronics knowledge is essential in order to understand the way microcontroller works. However, with the existing of latest microcontroller like PIC16F877A from

microchip, microcontroller works by writing programming code using C  programming language. Everything becomes so simple by learning C programming and uses it to program the microcontroller.

Here are the examples of microcontrollers:

( i ) PIC 16F870

( ii ) PIC 16F871

( iii ) PIC 16F872

( iv ) PIC 16F873A

( v ) PIC 16F874A

( vi ) PIC 16F876A

( vii ) PIC 16F877A

What is a Microcontroller?

A microcontroller is a small computer and it can only perform simple task.

Microcontroller consists of:

• Processor that executes programs. Processor execute program digitally. All instruction given to the processor should be in digital form.
• Program Memory to store the program that has been compiled successfully by the programmer. 
• RAM (random-access memory) to store "variables." 
• IO Port to connect sensor, keypad, LED, Relay and so on. 
• Timer to count the time to execute some process.

Microchip PIC 16F877A Microcontroller Features

Figure 2.1: PIC 16F877A

High-Performance RISC CPU :-

• Lead-free; RoHS-compliant

• Operating speed: 20 MHz, 200 ns instruction cycle

• Operating voltage: 4.0-5.5V

• Industrial temperature range (-40° to +85°C)

• 15 Interrupt Sources

• 35 single-word instructions

• All single-cycle instructions except for program branches (two-cycle)

WEEK 4

PROBLEM  STATEMENT

         Nowadays, human always rely on electronic devices to make their lives more convenience. The purpose of this project is to replace door key into a reliable door security system. Mobile phone is a device that always brought anywhere until they cannot be forgotten by the people. Thus, it is different with cad RFID access and also the key. How can we make mobile phones as a tool that can help? This will be the best solution for those who always forget to bring their house or office room key before left.

WEEK 3

INTRODUCTION

         This project focuses on the basic of Development of Wireless Security System using Handphone as an input password using microcontroller and can be further developed for more advance applications. With my latest creations, you can access all projects such as system password using only the keypad of any cell phone, never mind common type of wireless or touch screen using sensor detection device creation. So we can make this system without the need for a keypad button again and replace it with a cordless device and can also be hidden for specific use. For instance, real human sounds may be generated followed by the words showed on LCD display. Besides, the display also shows the location when someone is not around. The main purpose of doing this project is to enhance the security system of lecturer’s room and also to inform lecturer’s location to other people when they are not in the room.

WEEK 2

Briefing On Project Requirements

• Project Scope and limitation
• Safety Measures
• Implementation issues

ABSTRACT

           This project is to develop a password door security system using microcontroller and can be further enhance for more advance functions. Remote control keypad detector cordless phone models (Model: HPD100RF). This model function remote uses radio frequency medium for transmitting data to the reciever and microcontroller circuit. The main objectives are to familiarize with the concepts and functions of PIC16F877A and also to design a security PIC-based programming code. 

           This system uses keypad as user’s input interface and LCD display as output regarding to user’s input. The LCD display will shows the password symbols and desired words like short notices or messages. In order to change or remove the messages, the program coding can be modified and reload it to PIC. When the password input wrongly for three times, the system will shut down to fulfill the security purpose. For advance functions, this system will integrated with a speaker which human sound can be generated followed by the words shown in display. The users will feel convenience when using this product since its functions is easy and flexible.