Scientific Calculator

How to Use the Scientific Calculator

Basic Operations

1. Number Input

• Click number buttons (0-9) to input values
• Use decimal point (.) for fractions

2. Basic Arithmetic

• Use + (Addition), - (Subtraction), × (Multiplication), / (Division)
• Example: 12 + 5 × 3

3. Calculate Result

• Press = to compute the final result

4. Clear Screen

• Press C to reset the calculator

Scientific Functions

1. Trigonometric Functions

• sin, cos, tan buttons automatically add parentheses
• Example: sin(45) → calculates sine of 45 radians

2. Logarithms

• log (base 10) and ln (natural log)
• Example: log(100) → returns 2

3. Square Root

• Use √ button followed by value in parentheses
• Example: √(25) → returns 5

4. Exponents

• Use ^ for power calculations
• Example: 2^3 → returns 8

5. Factorial

• Use ! after a number
• Example: 5! → returns 120

6. Constants

• π inserts 3.141592653589793
• EXP inserts Euler’s number (2.718281828459045)

Advanced Features

1. Parentheses

• Use ( and ) to control calculation order
• Example: (2+3)×(4-1)

2. Complex Expressions

• Combine multiple operations:
  sin(π/2) + log(100) × √(9)

3. Keyboard Input

• Type directly using your physical keyboard
• Supports numbers and basic operators (+, -, *, /)

4. Error Handling

• Invalid expressions show “Error”
• Press C to reset after errors

Visual Guide

1. Color Coding

• Purple (#5F38D5): All operator/scientific function buttons
• Green: Equals button (=)
• Red: Clear button (C)

2. Button Layout

• 5-column grid organized by function type
• Scientific functions in top row
• Numbers in center-left section

Example Calculation

1. Basic Arithmetic
   15 × 3 + 10/2 → 45 + 5 = 50
2. Scientific Calculation
   sin(π/2) + 2^4 → 1 + 16 = 17
3. Complex Expression
   √(9!/(5×2)) → √(362880/10) = √36288 ≈ 190.49

Tips & Notes

• Close all opened parentheses automatically adds closing )
• For angles in degrees, convert first: sin((45 * π)/180)
• Factorial (!) works only with positive integers
• Use E for scientific notation (e.g., 2.5E3 = 2500)

Troubleshooting

⚠️ Common Issues

1. Unclosed Parentheses – Add missing )
2. Invalid Functions – Check syntax (e.g., log(100) not log100)
3. Math Domain Errors – Avoid negative sqrt/log(0) etc.
4. Large Numbers – Results show in exponential format