ADVANCED SYSTEM MANUAL

• 💡 Use number keys or click buttons for input
• 🔢 Advanced operations: +, -, *, /, % (modulo)
• 💫 Press '=' or Enter key to calculate
• ⌫ 'C' clears display, 'CE' clears entry
• 📝 Calculation history is saved automatically
• ⌨️ Keyboard shortcuts supported