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Design and Implementation of a Computerized Point of Sales System

Design and Implementation of a Computerized Point of Sales System

@SparklynServices


DEDICATION

This research material, titled “Design and Implementation of a Computerized Point of Sales System” is dedicated to God for His boundless grace and guidance. It is also a tribute to all computer enthusiasts whose contributions made my research journey smoother and enriched my documentation process, making the experience truly fulfilling.




ACKNOWLEDGEMENT

I am profoundly grateful to everyone who contributed to the successful completion of this project. I am especially grateful to my Supervisor (Name), the Head of Department (Name), and the Lecturers in the Department of Computer Science (CS) for their invaluable guidance and support. I also acknowledge the contributions of authors and scholars whose works on Design and Implementation of a Computerized Point of Sales System provided essential insights. Special thanks go to my study area (and any funding organizations, if applicable) for their financial assistance. I am equally thankful to stakeholders, including mentors, teachers, and colleagues, for their encouragement and support. Finally, I deeply appreciate my family and friends for their patience and unwavering support throughout this journey. Your contributions have been instrumental in making this research a reality.




PRELIMINARY PAGES


CHAPTER ONE

INTRODUCTION


    CHAPTER TWO

    LITERATURE REVIEW

    • 2.1 Introduction

    CHAPTER THREE

    SYSTEM ANALYSIS AND DESIGN

    • 3.1 Methodology Adopted
    • 3.1.1 Problem Identification Using SSADM
    • 3.2 Analysis of the Existing System
    • 3.2.1 Dataflow of the Existing System
    • 3.2.2 Disadvantages Of The Existing System
    • 3.2.3 Weakness of the existing System
    • 3.3 Feasibility Study
    • 3.3.1 Economic Feasibility
    • 3.3.2 Technical Feasibility
    • 3.3.3 Operational Feasibility
    • 3.4 Analysis of the Proposed System
    • 3.4.1 Data Flow Diagram of the Proposed System
    • 3.4.2 Advantages of the Proposed System
    • 3.4.3 Justification of the Proposed System
    • 3.5 Functional Requirements
    • 3.5.1 Use Case Diagram Of The Admin / User Privileges
    • 3.6 Data Requirements
    • 3.7 High Level Model of the Proposed System

    CHAPTER FOUR

    SYSTEM DESIGN AND IMPLEMENTATION

    • 4.1 Objectives of the Design
    • 4.2 Cohesion and Decomposition High level Model
    • 4.3 Control Center / Overall Dataflow Diagram
    • 4.3.1 Proposed System Operation Flowchart
    • 4.4 System Specification and Design
    • 4.4.1 Input and Output Specification
    • 4.4.2 Database Specification and Design
    • 4.4.3 Data Dictionary
    • 4.5 Choice and Justification of Programming Language
    • 4.6 Program Documentation
    • 4.7 Implementation Techniques
    • 4.7.1 System Testing
    • 4.8 Programming Module Specification
    • 4.8.1 Installation
    • 4.9 Computer Hardware Minimum Requirement
    • 4.10 Software Requirement
    • 4.11 Personnel / User Training
    • 4.12 File Maintenance Module

    CHAPTER FIVE

    SUMMARY, CONCLUSION AND RECOMMENDATION

    • 5.1 Introduction
    • 5.2 Summary
    • 5.3 Conclusion
    • 5.4 Recommendation

    REFERENCES

    APPENDIX A - “SOURCE CODE”

    APPENDIX B - “OBJECT PROGRAM”



    Design and Implementation of a Computerized Point of Sales System


    1.0 Introduction

    1.1 Background Of Study

    One of the great recent advances in the world of information technology is the rapid development of communication which has brought world into a global village, we can send mails electronically (e-mail), search for information (WWW), buy goods online (e-commerce), withdraw transfer money (e-banking), schooling online (e-learning), this has effected the society positive to a great extent, as result computerization of sales should not be exempt

    Application of technology in Sales has been adopted in developed countries for over two decades now, and this has been attributed to the desire of the governments of these countries to improve the efficiency of their goods and services, processes, accountability.

    Switching from a traditional cash register to a computerized POS system can be difficult − there are many factors to consider and some pitfalls to avoid. However the return on investment and benefits to your business can really make it worth your time and effort.

    In the most basic sense, a POS system is a glorified cash register. The most basic POS system consists of a computer, a cash drawer, receipt printer, a monitor, and an input device such as a keyboard or scanner. However, in addition to being more efficient than cash registers, POS systems can create detailed reports that can help you make more informed business decisions.

    POS systems saves money, provide productivity gains, and can cut down the amount of time you spend away from the primary focus of your business. This POS System Buyer’s Guide will walk you through the process of evaluating multiple POS vendors and choosing the right system.


    1.2 Statement Of Problem

    Sales is the fundamental tools in any business organization the profit and loose of any business depends detailed information on sales made to aid decision making and implementations, if accountability is not checked, then the business is sure to collapse, as a result in any retail or hospitality business there is need for a system that gives feedback to the management to aid decision making, this is where point of sales systems comes in handy


    1.3 Purpose Of Study

    The purpose of this study is to aid Golden Toast Enugu in enhancing their business by creating detailed reports that can help make more informed business decisions.


    1.4 Significance Of Study

    Moving from a cash register machine to a Point of Sales system is very significant to any retail sales of business activities because the return on investment and benefits to your business in the area of stocks processing, accountability and accurate data collation for effective management of the business.


    1.5 Scope Of The Study

    This project covers Golden Toast Enugu Office, the design will only cover the point of sales section of the company.


    1.6 Motivation For Study

    Before the researcher embarked on this research work, a careful study with a feasibility study was carried out, the researcher discovered that the Kings Venture has been operating on manual record keepings and sales inventory. What actually motivated the researcher to carry out this work was for the reason that, I made a purchase of some items of different product at Kings Venture. The sealer calculated all that was purchase and end up making a mistake on the total cost and wrongly charge on of the product below cost prize. I paid for the items and left with my invoice, but at the end of the day they discovered the error, luckily I am a regular customer, so I was informed and I had to pay up to complete the payment. With this incidence I then thought of developing a sales system that will help and replace all sort of errors in the manual operating one.

    Likely Contribution To Knowledge

    This research work will expose the researcher and also the readers to so many skills and enhance their programming ability as the software for this research work will be develop using a sophisticated programming language of object oriented, which is a high level program language. Therefore to the research more research writing skill, more coding ability, more understanding on solving real life situation. To the end users it will be of great benefits to them as it will reduce the number of error prone by the manual process of their operation, systematically keep track of sales and stocks and sales inventory.


    1.7 Objective

    The aims and object of this project to design and implement a computerized point of sale software with the aim of enhancing accountability within points of sales. Other objectives of this study are:

    1. A system that will generate sales receipt after purchase.
    2. Generate daily, monthly, yearly and date intervals selected, its report

    1.8 Limitation Of The Study

    Most constraints experienced during the course of writing this project is that of detailed information about their major operations, the personal manager was a little diplomatic in answering my questions in order to reveal information that may indent the company’s image, though that did not stop me from writing and researching for detailed information


    1.8 Assumptions Of Study

    It is assumed that Golden Toast Enugu, uses cash register as their point of sales and they are networked and connection to the internet for effective information dissemination.


    1.10 Definition Of Terms

    Bar Code:

    Information encoded into a rectangular bar shape, this information can be read by special device.

    Cash Drawer:

    A box attached to point of sales system that opens when directed by the software.

    Daisy Chained:

    Used when one device is connected through another device

    Data Collection Terminal:

    A stationary or hand held battery powered terminal with application software use to collect and process data from bar code

    LCD (Liquid Crystal Display :

    Technology used for display.

    VAR(Value Added Reseller):

    A classification of business that resells items and add some value to the sale either in training or supports

    SKU (Stock Keep Unit):

    Used in inventory control and POS where each product is assigned a number.

    Warranty:

    A written guarantee of a manufacturer’s or retailer’s responsibility. A limited warranty provides specific conditions under which a manufacturer or retailer will repair or replace an item.

    Drawer fund:

    The amount of money left in a drawer after the drawer has been closed. The drawer fund is typically used to provide startup money (change) for the next business day.

    Drop-ship:

    Refers to an item that will be shipped directly from your supplier to your customer.

    DUKPT (Derived Unique Key Per Transaction):

    A method of PIN pad encryption.

    Dun:

    A demand for payment of a bill or account.

    EBT (Electronic Benefit Transfer):

    An electronic system that allows recipients to receive government benefits (e.g., food stamps) by means of a debit card. Retailers can only accept EBT cards for food items that have been authorized by the USDA’s Food Stamp program

    EDC (Electronic Draft Capture):

    An automatic method of authorizing, balancing, and settling credit card transactions entered in your retail software package.

    EDI (Electronic Data Interchange):

    Ability to electronically exchange purchasing information between your retail software and the vendor’s system.

    Employee discount:

    A reduction in selling price on merchandise sold to an employee.

    Accounts receivable:

    Amounts owed to a business (an asset), usually by customers who purchased goods or services on credit.

    Adjustment:

    An increase or decrease to the quantity indicated in the retail software package. The adjustment ensures that the records in the retail software match the actual physical quantity in inventory.

    Additional markdown:

    An increase of a previous markdown to further lower the selling price.

    Address Verification Service (AVS):

    A service that reduces credit card fraud by verifying the cardholder’s address information when the physical card isn’t available to swipe through an MSR device (e.g., as with telephone orders). AVS processing doesn’t affect whether the charge is approved. Instead, AVS indicates whether or not the address provided by the customer matches the address on file with the credit card company so that the merchant can decide whether or not to process the charge.


    CHAPTER TWO

    2.0 Literature Review

    2.1 Introduction

    This chapter focuses on the review of related literature. A literature review includes the current knowledge as well as theoretical and methodological contributions to a particular topic. It documents the state of the art with respect to the topic you are writing. It surveys the literature in the topic selected. In this research work the literature review includes the conceputal review, theoretical framework, the review of related literature …

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    Defense Procedure for Computer Science Researchers


    In preparation for defending a project or seminar on Design and Implementation of a Computerized Point of Sales System, it is imperative that as a nursing student, you demonstrate comprehensive knowledge of your research. The defense process is structured to include presenting your work, answering questions, and illustrating its pertinence. Initially, provide a succinct yet thorough introduction to your research topic, emphasizing its importance and the objectives, ensuring that both the audience and the External Examiner can understand the scope of your study.


    Prior to your defense, be thoroughly acquainted with your research abstract and the critical elements of Chapter One, including motivation for embarking on this research, problem statement, objectives, and significance. In Chapter Two, be ready to cite at least two references from the literature review. For Chapter Three, you should be equipped to discuss the methodologies, tools, and techniques utilized. In Chapter Four, defend your research by justifying the findings and linking them to your research objectives.


    Conclude your defense by succinctly summarizing the study and offering insightful, evidence-based recommendations. A professional dress code, such as wearing a suit and tie, is vital to create a favorable impression and elevate your presentation.


    During the question and answer segment, the External Examiner may pose questions pertaining to your research. If confronted with a challenging or irrelevant question, respond diplomatically with, “Sorry, Sir/Madam, the question asked is beyond the scope of my study.” Whenever possible, direct your answers back to your research findings to reinforce your expertise.


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