The Calculator Application was designed to deliver smooth, intuitive, and responsive user interaction. It implements both click-based and keyboard-based inputs, ensuring usability across devices and accessibility for all users. The system’s logic layer, built in JavaScript (ES6), dynamically processes user actions and updates the display in real time.
1. Core Functionalities
Functionality Description
Numeric Input Handling Allows users to input digits (0–9) through on-screen buttons or keyboard keys. Each entry is dynamically rendered on the display.
Arithmetic Operations Performs standard operations — addition (+), subtraction (−), multiplication (×), and division (÷) using operator buttons or keyboard keys.
Result Computation Evaluates the entered expression when the equals (=) button or the Enter key is pressed, using JavaScript’s arithmetic logic and operator precedence.
Clear / Reset Functionality Clears the display and resets stored input values using a dedicated "C" or "AC" but…
