MATLAB Scientific Calculator — Modular UI Library

A serial-class, fully programmatic calculator built with native MATLAB UI components. Each functional area is encapsulated in its own class (see table below), enabling you to extend or replace individual modules without touching the rest of the system.

---

🧩 Architecture Overview

Core Class	Responsibility
CalculatorApp	Entry point — creates the main uifigure, lays out the UI, and wires modules together.
CalculationDisplay	Unified scrollable output panel and editable input field with command history.
NumberPad, AlphaPad	Provide numeric (0–9, ., -) and hexadecimal (A–F) input buttons.
ArithmeticOperators	+ − × ÷ buttons with safe callbacks and symbol normalization.
TrigonometricFunctions	Drop-down panel with sin, cos, tan plus inverse/hyperbolic toggles.
ExponentialLogarithm	Drop-down panel with exp, ln, log, log10, auto-inserts (.
RelationalSymbols	Inserts comparison operators: < > ≤ ≥.
CommonDelimiters	Inserts brackets, braces, colons, and commas.
ActionButtons	Handles del / clear / enter / menu, validates before eval.

Why modular?

• Swap out individual modules (pads, rails, display)
• Reuse the engine in a larger app
• Unit-test each component in isolation

---

✨ Features

• Scientific functions — trigonometry, exponentials, logarithms, π, e, hex input
• Robust expression validation — catches unbalanced delimiters, malformed numbers, invalid operator sequences
• Command history with scrollable display — up to 100 previous results; newest entry is automatically highlighted
• Completely code-based UI — no .mlapp or App Designer files; all layout and styling is done programmatically for version control friendliness

---

🚀 Getting Started

1. Create a new blank MATLAB project (or use an existing one).

2. Copy all .m files from this repository into the same project folder.

3. Run the app using either of the following:

   • Open CalculatorApp.m and press Run in the MATLAB Editor, or

   • In the Command Window, type:

     myCalculator = CalculatorApp();

---

⚠️ Notes & Limitations

• Currently does not support:

  • Unit conversions
  • Number system conversions
  • Graphing or plotting

• Layout is built with grid containers (uigridlayout), but does not yet include:

  • Responsive reflow logic
  • Drag/drop component positioning

• Many additional quality-of-life features are planned but not yet implemented

Screen.Recording.2025-09-18.at.12.07.30.AM.mov