Digital Calculator

User Instructions

Multiple Functions:
  • Percentage calculation
  • Sign toggle (±)
  • Keyboard support
  • Calculation history display
  • All clear (AC) function
  • Better error handling
  • History tracking
  • Keyboard input support
Fixes and Improvements:
  • Proper decimal handling
  • Correct operator precedence
  • Better state management
  • Memory of previous calculations
  • Fixed zero handling
  • Improved display formatting
  • Larger display
  • History display
Colorful Calculator

How to Use

  • Mouse Input:Click buttons normally
  • Keyboard Input:Use number keys and operators (+, -, *, /)
  • Enter:Equals
  • Escape:All Clear
  • %:Percentage
  • ±:Toggle sign
New Features Explained:
  1. History Display:Shows previous calculations
  2. Keyboard Support:Full keyboard input
  3. Percentage Calculation:Converts current number to percentage
  4. Sign Toggle:Changes positive/negative values
  5. All Clear (AC):Fully resets the calculator
  6. Better Error Handling:Especially for division by zero
This version should work properly with all basic calculator operations and includes additional functionality while maintaining the colorful design. The code is organized with clear separation of concerns and commented sections for better maintainability.
Scroll to Top