Where Does Binary Show Up?

Binary

• Binary is a number system comprised of two digits, 0 and 1, used by computers to represent all other numbers and characters.

• Binary is also known as base 2.

Windows Calculator

• Converts between

  • Decimal (base 10)

  • Binary (base 2)

  • Hexadecimal (base 16)

How Values Are Represented by Each System

• Decimal

  • 0 1 2 3 4 5 6 7 8 9

• Hexadecimal

  • 0 1 2 3 4 5 6 7 8 9 A B C D E F

• Binary

  • 0 1

Binary Digits Converted to Hex

• A 16-digit binary pattern converts to a 4-digit hexadecimal value

• Example: 1110 0011 1000 1011 converts to E38B in hex

  • Each hex digit represents a 4-bit pattern

    • E = 1110

    • 3 = 0011

Where Does Hex Show Up?

• Colors for web pages are represented as hex codes defining the amount of red, green, and blue (RGB) needed to produce a specific color.

• Example: The color violet:

  • Red/green/blue triplet value: 153, 51, 255

  • Hex code for that color: 9933FF