How to Use

• Enter Numbers/Operations: Click the number and operation buttons (or use the keyboard) to build an expression (e.g., 5 + 3 * 2).

• Calculate: Click the = button or press Enter to compute the result.

• Clear: Click the C button or press Escape to reset the display.

• Keyboard Support:

  • Numbers (0-9) and decimal point (.) for input.

  • Operators: +, -, *, /.

  • Enter to calculate, Escape to clear, Backspace to delete the last character.

• Error Handling: Displays "Error" for invalid expressions (e.g., division by zero).

Features

• Responsive Design: Uses Tailwind CSS for a clean, mobile-friendly interface.

• Real-Time Input: Updates the display as you click buttons or type.

• Basic Arithmetic: Supports addition, subtraction, multiplication, and division.

• Precision: Results are rounded to 4 decimal places and trailing zeros are removed.

• Keyboard Support: Allows input via keyboard for faster operation.