Simple Calculator

A simple calculator created using HTML, CSS, and JavaScript. It handles basic arithmetic operations, includes percentage calculations, supports keyboard input, features interactive buttons, and keeps a history of calculations.

Features

• HTML Structure: Fully implemented buttons, display, and layout.
• CSS Styling: Clean, responsive design.
• JavaScript Functionality:
  • Keyboard input support
  • Addition, subtraction, multiplication, division
  • Percentage (%) calculations
  • Decimal points
  • Backspace button (removes last character/operator)
  • Clear All (C) button
  • Equals (=) button
  • Calculation History: Stores previous calculations for quick reference

Usage

1. Click numbers and operators to perform calculations.
2. Press Backspace to delete the last input.
3. Press C (Clear All) to reset the display.
4. Press = to calculate the result.
5. Use the % button to calculate percentages.
6. Decimal points work as expected.
7. Keyboard input is supported.
8. Previous calculations appear in the history panel, and can be reused by clicking them.