Decimal is our everyday number system, using digits 0-9.

• Uses digits 0-9
• Most commonly used numbering system by humans
• Each position has a weight of powers of 10
• Example: 123 = 1×10² + 2×10¹ + 3×10⁰

Hexadecimal uses 16 symbols: 0-9 and A-F (or a-f), widely used in programming and computer science.

• Uses digits 0-9 and letters A-F (or a-f)
• Commonly used for memory addresses and color values
• Each hex digit represents 4 binary bits
• Often uses '0x' prefix, such as '0x1A3F'