Application Development (Individual Project)
Calculator App
Project Background
This project is a compact, palm-sized calculator application developed using C# WinForms. Designed with a focus on ease of use and professional functionality, the app serves as a versatile tool for both standard arithmetic and advanced scientific computations. It bridges the gap between basic desktop calculators and specialized hardware devices by incorporating core features such as mode switching, real-time equation formatting, and a persistent history log to ensure a high-performance user experience.
Design Process
The design process began with a thorough analysis of physical scientific calculators, such as the Casio FX-97SG X, to understand the ergonomic and functional expectations of students and technical professionals. This research informed the application's color scheme and the intuitive layout of the user interface.
Following the research phase, I mapped out the system's logic to ensure a seamless flow between Standard and Scientific modes. Implementation focused on dynamic UI adjustment, where the number pad and scientific buttons grow or shrink based on the user's selection6. To ensure code integrity, I prioritized robust input validation and order-of-operation handling, particularly for unary operations. The final development phase involved integrating specialized accessibility features, such as an audio toggle that audibly announces operation results and mode changes.
Role & Impact
As the sole developer of this individual project, I was responsible for the entire software development lifecycle, including designing the user interface and coding the core mathematical engine from scratch using C# WinForms. My role involved implementing advanced features such as mode switching, answer recall, and physical keyboard support while ensuring technical integrity through comprehensive error handling for edge cases like division by zero. Additionally, I authored all technical documentation and operational guides to provide clear user instructions and system overviews.
Project Information
Target Audience:
General Public
Category:
Application Development (Individual Project)
Completed on:
10 June 2025
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