🏦 Bank Management System (Assembly Language - 8086)

A simulation of core banking operations (like account creation, deposit, withdrawal, and display) developed using Assembly Language on the Emu8086 Emulator. This project was developed as part of the Microprocessors & Microcontrollers Lab(CSE 304) course at Green University of Bangladesh.

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📋 Table of Contents

• 🔍 Project Overview
• 🎯 Features
• ⚙️ Tools & Technologies
• 🧠 Key Procedures
• 📊 Performance & Testing
• 📈 Future Improvements
• 👨‍💻 Author

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🔍 Project Overview

This Bank Management System is built entirely in 8086 Assembly Language and executed on the Emu8086 emulator. It mimics the basic workflow of banking systems by allowing users to:

• Create new accounts
• View account details
• Deposit or withdraw money
• Validate balance before withdrawals

The project serves as a practical learning exercise for mastering low-level programming and memory handling.

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🎯 Features

• ✅ Create new accounts
• ✅ Store and retrieve account details
• ✅ Deposit money to existing accounts
• ✅ Withdraw money with balance validation
• ✅ Navigate through a menu-driven interface
• ⚙️ Efficient memory management under Emu8086 constraints
• ⛓ Built with low-level BIOS interrupts (INT 21h)

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⚙️ Tools & Technologies

• Language: 8086 Assembly (x86 architecture)
• Emulator: Emu8086
• Interrupts: INT 21h for Input/Output handling
• Platform: Windows OS with Emu8086 installed

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🧠 Key Procedures

Each major function of the system is implemented through well-defined assembly procedures:

Functionality	Description
Main Procedure	Handles menu navigation
Create Account	Captures and stores user account information
Show Account	Displays all saved account details
Deposit Money	Adds entered amount to a user’s account balance
Withdraw Money	Subtracts amount with sufficient balance check

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📊 Performance & Testing

The project was thoroughly tested on Emu8086, validating the following actions:

• ✔ Account creation: Captures and confirms user entry
• ✔ Deposit: Adds amount successfully and updates balance
• ✔ Withdrawal: Checks balance before processing; shows error if insufficient

Average response time: Instantaneous, suitable for learning/demo purposes.
Memory Usage: Optimized for emulator constraints (~64KB environment)

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🧪 Limitations

• ❌ No persistent storage (data lost on program exit)
• ❌ Single-user, single-session use only
• ❌ No graphical interface (text-based only)
• ❌ No error handling for invalid inputs
• ❌ Not scalable for real-world banking

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📈 Future Improvements

• 💾 Add file handling or disk writing for data persistence
• 🔐 Integrate PIN protection or password verification
• 🧮 Add advanced banking operations like interest or loan calculations
• 💻 Build a GUI wrapper or migrate to a high-level language (C/Java)
• 👥 Enable multi-user support with user authentication

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👨‍💻 Author

Md Syful Islam
🎓 B.Sc. in CSE (Day), Green University of Bangladesh
🧑‍🏫 Course: Microprocessors & Microcontrollers Lab (CSE 304)
👨‍🏫 Instructor: Mr. Md Nazmus Shakib
📚 Section: 222 D6
📅 Submitted on: 13 December 2024

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📎 References

1. Cool Assembly Projects – Quora
2. Procedure and Macro in Assembly
3. EMU8086 User Guide PDF
4. Command Line in Emu8086 – StackOverflow