Agile-Calculator System Requirements Document

Introduction

The Agile-Calculator project aims to develop a simple, single-page calculator application. The focus is on creating a user-friendly interface that allows users to perform basic arithmetic operations efficiently. The project is designed to cater to users in India, considering locale-specific defaults such as currency and timezone.

System Overview

The Agile-Calculator is a web-based application that provides users with a straightforward interface to perform basic calculations. The application will be accessible via web browsers and will not require any installation. The design will prioritize simplicity and ease of use, ensuring that users can quickly perform calculations without unnecessary complexity.

Functional Requirements

• As a User, I should be able to perform addition operations.
• As a User, I should be able to perform subtraction operations.
• As a User, I should be able to perform multiplication operations.
• As a User, I should be able to perform division operations.
• As a User, I should be able to clear the current calculation to start a new one.

User Personas

• User: The primary user of the Agile-Calculator, who requires a simple tool to perform basic arithmetic operations quickly and efficiently.

Core User Flows

• User opens the calculator application -> User inputs numbers and selects an operation (addition, subtraction, multiplication, division) -> User views the result -> User clears the calculation to start a new one.

Visuals Colors and Theme

• primary: #3498db (a calming blue for the main interface)
• primary_light: #85c1e9 (a lighter blue for hover states)
• secondary: #e74c3c (a contrasting red for emphasis and alerts)
• accent: #f1c40f (a vibrant yellow for call-to-action buttons)
• highlight: #f39c12 (a warm orange for active indicators)
• bg: #ecf0f1 (a light grey for the background)
• surface: rgba(255, 255, 255, 0.9) (a near-white for card/panel backgrounds)
• text: #2c3e50 (a dark blue for primary text)
• text_muted: #95a5a6 (a softer grey for secondary text)
• border: rgba(44, 62, 80, 0.2) (a subtle border color)

Signature Design Concept

The Agile-Calculator will feature an interactive "flip card" design for the calculator interface. Each button on the calculator will appear as a card that flips when clicked, providing a tactile and engaging experience. The flipping animation will be smooth and responsive, using framer-motion for spring physics. The home page will have a minimalist design with the calculator centered, surrounded by a subtle animated background that shifts colors based on the time of day, creating a dynamic and visually appealing experience.

Interaction Model & Motion Direction

• Interaction Model: Animated
  • The calculator will feature smooth animations for button interactions, enhancing the user experience with visual feedback.
  • The landing page will have moderate scroll-triggered reveals and hover transitions to maintain a clean and polished look.

Non-Functional Requirements

• The application must load within 2 seconds on a standard broadband connection.
• The calculator should function correctly on all major web browsers, including Chrome, Firefox, and Safari.
• The design should be responsive, ensuring usability on both desktop and mobile devices.

Tech Stack

• Frontend: React for Web
• Backend: None required for this single-page application
• Database: None required for this single-page application

Assumptions and Constraints

• The application will not store any user data or calculation history.
• The design will focus on simplicity and ease of use, avoiding complex features or settings.

Glossary

• User: An individual who uses the Agile-Calculator to perform arithmetic operations.
• Single-page application: A web application that interacts with the user by dynamically rewriting the current page, rather than loading entire new pages from the server.