1. MICROPROCESSOR & MICROCONTROLLER (BEX32003) DIGITAL CODE LOCKGROUP MEMBER:MOHD TARMIZI BIN ISAHAK(CE 100163)MUHAMMAD FIKRI BIN ISMAIL(CE 100148)RAJA FAIRUZ NABILA BT RAJA MUDZAFAR SHAH (CE100202)ZAIRUL AFFANDI BIN ABDUL KAMAR (CE 100125)NUR ADILAH BINTI SHAMSUDDIN(CE 100165)INSTRUCTORS:DR MOHD SHAMIAN BIN ZAINALDATE:23 DECEMBER 2011

2. INTRODUCTION 3. Digital Code Lock using PIC16F627 is a basic control systemwith an ability that allows the rightful user to deploy platform to any property that require simple password protection. This code can be changed by the user. This circuit is eminently suitable as a digital code lock. Digital code lock is a type of lock in which a sequencenumbers is used to open the lock. This type of lock use numerical code for authentication where the correct code must be entered in order for the lock todeactivate.The lock can be use with an outdoor gate or a normal door.The functionality of this lock implemented in software. 4. When the correct code is entered it will open thedoor. The significant of this project is firsteliminating the need for a key. When there is no key, it will allow each person wholives at a residence to enter home without a key.The lost and forgotten keys are problems of the past. Hence using the digital code lock it will reduce the risk and liability of keys falling into wrong hands asa result being stolen or duplicate.The digital code lock, changing access code is more cost effective then the process of changing all keyed lock. 5. PROBLEMSTATEMENT 6. There are great varieties of digital code locks. Generally speaking, they can be classified into scores of type, such as electronic lock, fingerprint lock,card lock biological lock, etc. Among them the mostThis kind of lock can avoiding practical and the mostthe problems caused by thepopularized one come tocopying of keys.digital code lock. It is because the keys people carryhave become burden most of the On the premise that its safety is time, but by contrast people need high, its another feature withoutonly to remember a set of codes forkey is getting more and more electronics locks and dont have tofavour of people.carry any key, thus freeingthemselves from worries. 7. OBJECTIVES 8. To help users and give themfavour to go anywhere.To avoid any To design a crimeskeyless door especially entry by usingstealing electronic digital activities.lock code.The objectives ofour project are listed asabove: 9. SCOPE OFPROJECT 10. Projects do not needcomplex and not too shortaccording to the studyand it should relate to the study basic idea and operation of Digital Code Lock. The project identifies theThe project produced must suitable type of PICinvolve the use ofmicrocontroller for the project components and circuits to developed interfacing linkhave been studied andbetween hardware circuit and understood.software programming.The project displayed the code and signal, whensuccess LCD screendisplay code accepted. 11. PROJECTIMPLEMENTATION 12. Circuit Design and Drawing- Research the circuit- Study the component and material- Simulate the circuit- Construct the circuit 13. Programming the PIC - Select the language to use for microcontroller - Write the program code - Debug and check the error - Compile the code 14. Board Construction - Drawing the circuit (Proteus Software) 15. - Wiring circuit (protoboard) 16. BLOCK DIAGRAM Electronic Code Lock has both hardware and softwareparts. Figure below shows block diagram of the project: 17. FLOW CHART 18. CONCLUSION 19. When we completed thisproject, we had learned and understand the process ofconstructing the Digital CodeLock which contained This digital code lock is hardware and software therefore particularly useful development. We also knowin applications such as hotel and understand the room door locks, residential microcontroller PIC and how housing and even officeto implement it on mybuildings. project.We feel that this digital codelock is very marketableDesigning code lock very because it is easy to use, interesting for us where wecomparatively inexpensivecan get involve in due to low powerprogramming environmentconsumption and highlyseriously. reliable. The biggest hurdle we had toOur digital code lockovercome with this project was performed as expected. Weinterfacing the microcontroller were able to implement all the with the hardwarefunctions specified in ourcomponents. proposal. 20. RECOMMENDATION 21. Digital code lock isusefulin society. Therefore, itshould be expanded sothat the community can use wherever theyare as well as using a code lock on the vehicle or the like.There are few suggestions appear after completing several stages ofthis project basedon some problems that we find: Digital code lock may For the sake of theneed to limit the number future, digital codeof password entry lock should be added attempts to reduce thewith siren when have a risk for broken- burglary password. in password. 22. REFERENCES[1] Tim Wilmshurst, Designing EmbeddedSystems with PIC Microcontrollers, 2nd ed. United Kingdom 1998.[2] Harprit Singh Sandhu, Making PIC Microcontroller Instruments &Controllers, New York, 1987.[3] Milan Verle mikroElektronika, PIC Microcontrollers Programming in C,1st ed, United Kingdom, 2009.[4] Myke Predko, Programming and Customizing the PIC Microcontroller, 3rd ed, 2005.[5] Di Jasio, Wilmshurst, Ibrahim, Morton, Bates, J. Smith, D.W. Smith, and Hellebuyck, PIC Microcontrollers Know It All, United Kingdom, 1987.