The Digital Locking System with Auto Lock Functionality

Good Essays
Date:
To:
From:
Subject: Semester Project of DLD- The Digital Locking System with Auto Lock Functionality.

Introduction
Digital Locking System with auto lock functionality has got several applications nowadays. As we are growing at high pace, we are getting more suspicious about our things. This locking system gives solution to that problem. This circuit described here activates only when the specified sequence of four digits is pressed. If a wrong key is touched, it will not unlock. The lock code is set by connecting nine SPST switches. The code lock circuit is built around two CD4013 dual-D flip-flop ICs. The clock pins of the four flip-flops are connected to that specified sequence of digits, which is the correct code sequence to unlock the system. The circuit also contains (555) timer IC to lock automatically after certain period of time.

Discussion
Equipments Used * SPST switches. * CD4013 Dual-D flip-flop ICs. * 74LS147 Decimal to BCD Encoder. * 74LS47 BCD-to-7-Segment Decoder IC. * 7-Segment Display. * 555 timer IC. * Relay. * 12V DC Power Supply.
Procedure
The Digital Lock Circuit diagram shows that the nine SPST switches are inputs to clock pulse of CD4013 dual D-flip flop. Push button switches are used for entering the code number. One side of all the push button switches are connected to +12V DC. The remaining ends of push buttons are connected to clock input pins of the flip-flops. When we press any switch the numbers will be displayed on seven segments if the combination matches to each flip flops pulse the circuit will activate, initially the set of flip flips will be as a low and reset will be common to operate the circuit properly.
After the right sequence of four digits the lock will be open and then again to lock the 555 timer is used to control it. 25 seconds after unlocking it will automatically lock again. The relay is used to close the circuit when it energizes then the lock will be closed,

You May Also Find These Documents Helpful

  • Good Essays

    Central Locking System

    • 1251 Words
    • 6 Pages

    WikiPedia Power door locks (also known as electric door locks or central locking) allow the driver or front passenger to simultaneously lock or unlock all the doors of an automobile or truck, by pressing a button or flipping a switch. Power door locks were introduced on the luxury Scripps-Booth in 1914, but were not common on luxury cars until Packard reintroduced them in 1956. Nearly every car model today offers this feature as at least optional equipment. Early systems locked and unlocked…

    • 1251 Words
    • 6 Pages
    Good Essays
  • Good Essays

    Anti Lock Breaking System

    • 1244 Words
    • 5 Pages

    Introduction An anti-lock braking system (ABS) is a safety system on motor vehicles which prevents the wheels from locking while braking. The Anti-lock Braking System is designed to maintain vehicle control, directional stability and optimum deceleration under severe braking conditions on most road surfaces It does so by monitoring the rotational speed of each wheel and controlling the brake line pressure to each wheel during braking. This prevents the wheels from locking up. A rotating…

    • 1244 Words
    • 5 Pages
    Good Essays
  • Powerful Essays

    BMW: The Digital Auto Project Case Analysis Report 1. Recommendation 1-1. We recommend 3-series touring wagon development project as a target of Digital Car Project. The ultimate objective of the project is to halve lead time of product development in BMW from 60 months to 30 month. As a result, the firm can incorporate reflect fickle customers’ tastes and the latest technology to their product development quickly and it enable them to fit the market needs strategically. If this change…

    • 1419 Words
    • 6 Pages
    Powerful Essays
  • Powerful Essays

    Digital Rights Management: Maneuvering through digital locks Introduction In this day and age, it is almost impossible to survive without utilizing some form of technology for the purpose of performing daily tasks more efficiently. My laptop computer enables me with the ability to accomplish a variety of tasks, and downloading music happens to be one of them. For years, I have downloaded and burned music to audio CDs, and since the purchase of an MP3 player I have also been able to sync music…

    • 4804 Words
    • 20 Pages
    Powerful Essays
  • Best Essays

    1.1 Lecturer MR MUPEDZISWA QUESTION 1) a) With the aid of diagrams describe the location and functionality of the lobes of the brain include in your discussion the effects of damage and anatomical malfunctioning. b) Write an account of the functionality of the limbic system. a)…

    • 2069 Words
    • 9 Pages
    Best Essays
  • Good Essays

    Anti Lock Braking System

    • 2418 Words
    • 10 Pages

    Chapter Four ABS Training 4.1 What is ABS? Anti-Lock Brake System (ABS) is a combination of vehicle hardware and software that work together to maintain steering control and vehicle stability during hard braking. Initially developed as a special option for topof-the-line models, today’s ABS units are compact, easy to service, inexpensive and widely available. Now every major automotive manufacturer offers some form of ABS vehicle control that provides safe, maximum braking under all weather conditions…

    • 2418 Words
    • 10 Pages
    Good Essays
  • Good Essays

    Anti-Lock Braking System

    • 536 Words
    • 3 Pages

    Anti-lock Braking System (ABS) Why are they Used is Heavy Vehicles? ABS is used to prevent car and truck accidents on our roads. Looking at statistics, it can be said that the introduction of ABS has reduced the amount of accidents involving heavy vehicles on our roads, decreasing the number of fatalities. If we are able to prevent crashes, this will save a lot of people's money on repairs. Another reason that ABS is good on heavy vehicles is the saving in tyre wear. It is estimated that ABS…

    • 536 Words
    • 3 Pages
    Good Essays
  • Powerful Essays

    Digital Banking System

    • 4518 Words
    • 19 Pages

    Chapter 1 Introduction 1.1) Introducing of Banking Managment : It is generally said that the word “BANK” has been originated in Italy. In the middle of 12th century there was a great financial crisis in Italy due to war. A bank is a financial institution which deals with deposits and advances and other related services. It receives money from those who want to save in the form of deposits and it lends money to those who need it. Definition of a Bank is, Oxford Dictionary defines…

    • 4518 Words
    • 19 Pages
    Powerful Essays
  • Good Essays

    lock

    • 133802 Words
    • 536 Pages

    http://www.instructables.com/id/Password-Lock-with-Arduino/?ALLSTEPS Subject: =?utf-8?Q?Password=20Lock=20with=20Arduino?= MIME-Version: 1.0 ------------mc3qkI6DeZa8RdD0B6wukp Content-Disposition: inline; filename=default.htm Content-Type: text/html; charset=UTF-8; name=default.htm Content-ID: Content-Location: http://www.instructables.com/id/Password-Lock-with-Arduino/?ALLSTEPS Content-Transfer-Encoding: Quoted-Printable Password Lock w= ith Arduino =…

    • 133802 Words
    • 536 Pages
    Good Essays
  • Satisfactory Essays

    Digital Diary System

    • 572 Words
    • 3 Pages

    CHAPTER 1 BACKGROUND OF THE STUDY AND STATEMENT OF THE PROBLEM INTRODUCTION The DIGITAL DIARY SYSTEM helps the school to lessen the work, search and view the data accurately by using this system. BACKGROUND OF THE STUDY: On May 13, 1977 the post of Undersecretary of Education and Culture. In charge of Non formal Education, was created by the President of the Philippines with Assemblywoman for Region III, Dr. Felicita G. Bernardino as the Deputy…

    • 572 Words
    • 3 Pages
    Satisfactory Essays