Software Requirements Specification (SRS) for Inflation Calculator

Introduction

Purpose:

The purpose of this document is to outline the requirements for the development of an Inflation Calculator application. This application calculates the impact of inflation on the purchasing power of money over time, allowing users to understand how inflation affects the real value of their funds.

Scope:

The Inflation Calculator will provide users with a tool to estimate the future value of money based on a specified inflation rate. Users will input details such as initial amount, time period, and inflation rate, and the system will calculate and display the adjusted value.

System Overview

System Description:

The Inflation Calculator will be a web-based application accessible through a browser. It aims to provide users with an intuitive interface to input financial details and receive an accurate calculation of the impact of inflation.

System Architecture:

The application will follow a client-server architecture, with the client being the web browser and the server handling the inflation calculation logic.

Functional Requirements

Use Cases:

Calculate Inflation Impact:

• Users can input details such as initial amount, time period, and inflation rate.
• The system will calculate and display the adjusted value based on the specified inflation rate.

Functional Requirements:

Input:

The system shall accept the following input:

• Initial Amount (in INR)
• Time Period (in years)
• Inflation Rate (in percentage)

Calculation:

• The system shall calculate the adjusted value based on the specified inflation rate and time period.

Output:

• The system shall display the adjusted value to the user.

Non-Functional Requirements:

• The system should provide a response time of under 2 seconds.
• The application should be accessible on common web browsers (Chrome, Firefox, Safari).

External Interface Requirements

User Interfaces:

• The user interface shall include input fields for the initial amount, time period, inflation rate, along with a “Calculate” button.
• The calculated adjusted value shall be displayed prominently.

Hardware Interfaces:

• The system should be compatible with standard computing hardware.

Software Interfaces:

• The application shall be developed using HTML, CSS, and JavaScript.
• The server-side logic can be implemented using a backend framework (e.g., Node.js, Django).

Communication Interfaces:

• The application will communicate with the server for the inflation calculation and display of results.

Performance Requirements

Response Time:

The system should respond within 2 seconds for a typical user input.

Throughput:

The application should handle at least 100 simultaneous users.

System Constraints

Regulatory Requirements:

The application should comply with relevant financial regulations.

Hardware Limitations:

The system should be compatible with devices with standard web-browsing capabilities.

Security Requirements

Authentication:

The application may or may not require user authentication, depending on whether users want to save their inflation calculation data.

Data Protection:

If authentication is implemented, user data should be stored securely.

Quality Attributes

Reliability:

The application should produce accurate results based on the provided input.

Maintainability:

The code should be well-documented for ease of maintenance.

Usability:

The user interface should be intuitive, requiring minimal guidance.

Testing Requirements

Test Cases:

Test cases should cover various scenarios with different initial amounts, time periods, and inflation rates to ensure accurate adjusted value calculations.

Test Case 1:

• Inputs: Initial Amount = 50,000 INR, Time Period = 5 years, Inflation Rate = 3%.
• Expected Output: Adjusted Value ≈ 57,648 INR

Test Case 2:

• Inputs: Initial Amount = 1,00,000 INR, Time Period = 10 years, Inflation Rate = 5%.
• Expected Output: Adjusted Value ≈ 155,132 INR

Test Case 3:

• Inputs: Initial Amount = 75,000 INR, Time Period = 8 years, Inflation Rate = 2.5%.
• Expected Output: Adjusted Value ≈ 87,546 INR

Acceptance Criteria:

The application is considered successful if it produces correct adjusted values based on the provided initial amounts, time periods, and inflation rates.

Project Timeline

Milestones:

Design, Development, Testing, Deployment.

Development Phases:

Frontend development, Backend development, Testing, Deployment.

Glossary

None

Database Structure

Tables:

Inflation_Calculator_Records:

• RecordID (Primary Key, Auto-increment)
• InitialAmount (Decimal)
• TimePeriod (Integer)
• InflationRate (Decimal)
• AdjustedValue (Decimal)
• CalculationDate (DateTime)

Conclusion

This extended SRS document provides a more detailed overview of the Inflation Calculator application, including the database structure and additional test cases. It should be reviewed and approved by relevant stakeholders before proceeding with the development phase.