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cashier-system-pascal

Desktop cashier application built using Lazarus IDE and Object Pascal with dynamic product management and persistent TXT database.

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README

Smart Cashier System

Desktop Point of Sale (POS) application built using Lazarus IDE and Object Pascal.

This project was developed as a portfolio and learning project to demonstrate desktop application development, event-driven programming, file handling, and dynamic product management using Lazarus / Delphi-style programming.

Application Preview

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Features

Login System

  • Password protected login form
  • Hidden password input

Cashier System

  • Product selection using ComboBox
  • Automatic product price detection
  • Quantity input
  • Automatic subtotal calculation
  • Total transaction calculation
  • Transaction history display

Product Management

  • Add new product
  • Update product data
  • Dynamic product loading
  • Persistent TXT database storage
  • Popup product management window

File Handling

  • Automatic creation of Barang.txt
  • Automatic loading of product database
  • Permanent data storage

Technologies Used

  • Object Pascal
  • Lazarus IDE
  • Delphi-style RAD Programming
  • Event-driven Programming
  • TXT Database Storage

Application Structure

Form Function
Form1 Login System
Form2 Main Cashier System
Form3 Product Management

Database Format

Products are stored inside:

text
Barang.txt

Example:

text
Royco=500
Indomie=3500
Teh Pucuk=4000

Format:

text
ProductName=Price

Main Components

  • TForm
  • TButton
  • TEdit
  • TComboBox
  • TMemo
  • TListBox
  • TStringList

System Workflow

text
Barang.txt
↓
Load Product Data
↓
ComboBox Product List
↓
Select Product
↓
Auto Price Detection
↓
Subtotal Calculation
↓
Transaction Processing

Future Improvements

  • SQLite Database Integration
  • Barcode Scanner Support
  • Receipt Printing
  • Inventory Management
  • Product Search
  • User Authentication
  • Admin & Cashier Roles
  • Sales Reporting
  • Export Invoice PDF
  • Modern UI Design

Learning Objectives

This project demonstrates:

  • Desktop Application Development
  • Lazarus / Delphi Programming
  • Event-driven Programming
  • CRUD Logic
  • File Handling
  • Basic POS System Architecture

Author

Muhamad Rizki

Notes

This application is a simulation and portfolio project created for educational and software development practice purposes.