Cedar-Calculator System Requirements Document

1. Introduction

The Cedar-Calculator project aims to develop a basic calculator application with a single-page design. This application will focus on providing essential arithmetic operations, ensuring a straightforward and user-friendly experience for users in India.

2. System Overview

The Cedar-Calculator is designed to perform basic arithmetic operations such as addition, subtraction, multiplication, and division. The application will be developed as a single-page web application, ensuring quick access and ease of use. The focus is on simplicity and efficiency, catering to users who require basic calculation functionalities without the complexity of advanced operations.

3. Functional Requirements

• As a User, I should be able to perform addition on two numbers.
• As a User, I should be able to perform subtraction on two numbers.
• As a User, I should be able to perform multiplication on two numbers.
• As a User, I should be able to perform division on two numbers.

4. User Personas

• User: An individual who requires basic arithmetic calculations. The user values simplicity and efficiency in performing quick calculations without additional features or distractions.

5. Visuals Colors and Theme

• primary: #2E8B57 (Sea Green)
• primary_light: #66CDAA (Medium Aquamarine)
• secondary: #FF6347 (Tomato)
• accent: #FFD700 (Gold)
• highlight: #FFA07A (Light Salmon)
• bg: #F5FFFA (Mint Cream)
• surface: rgba(46, 139, 87, 0.8)
• text: #2F4F4F (Dark Slate Gray)
• text_muted: #708090 (Slate Gray)
• border: rgba(47, 79, 79, 0.2)

6. Signature Design Concept

The Cedar-Calculator will feature an interactive "floating keypad" design. The keypad will appear to float above the background, casting subtle shadows for a 3D effect. When users hover over the keys, they will gently lift and change color, providing tactile feedback. The background will feature a soft, animated gradient that shifts subtly as users interact with the calculator, creating a dynamic and engaging experience. This will be implemented using framer-motion for smooth animations and transitions.

7. Interaction Model & Motion Direction

The interaction model for the Cedar-Calculator will be "animated." The single-page design will include hover transitions and spring physics on interactive elements, providing a polished and responsive user experience. The calculator keys will animate slightly when pressed, enhancing the tactile feel of the application.

8. Non-Functional Requirements

• The application must load within 2 seconds on a standard internet connection.
• The user interface should be responsive and accessible on both desktop and mobile devices.
• The application should handle up to 100 concurrent users without performance degradation.

9. Tech Stack

• Frontend: React for Web
• Backend: Python with FastAPI
• Database: Not applicable as the application does not require data persistence.

10. Assumptions and Constraints

• The application will not support advanced arithmetic operations such as trigonometry or logarithms.
• The application will be developed as a web application, accessible via modern web browsers.
• The design will prioritize simplicity and ease of use over additional features.

11. Glossary

• 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.
• Responsive design: An approach to web design that makes web pages render well on a variety of devices and window or screen sizes.
• Framer-motion: A library for creating animations in React applications.