1.1 · Lesson 3 of 6
Hexadecimal uses
Syllabus 1.1.3
What this lesson covers
- Explain why hexadecimal is used and where
Key vocabulary
- HTML colour code
- A 6-digit hex code, written after a #, that tells a web page which colour to show.
- RGB
- A colour system that mixes red, green and blue light, using 8 bits for each colour (24 bits in total).
- MAC address
- A 48-bit address that uniquely identifies a network-enabled device, usually written as 6 pairs of hex digits.
- Memory dump
- Copying the whole contents of RAM to a storage drive, often to help find out why a program crashed.
- IPv6 address
- A 128-bit network address, written as 8 groups of 4 hex digits.
- Error code
- A code shown when something goes wrong, often written in hex so it's shorter to read and look up.
Check your learning
- Quick check: 4 questions
- Key vocabulary test: 6 terms
- Activity 1: Hex uses quiz · 8 questions
- Activity 2: Where is hex used? · drag and drop
- Activity 3: Colour codes · 8 questions