Imagine you're building with Lego. A single brick (bit) is tiny. Eight bricks make a small block (byte - enough for one letter). 1,024 small blocks make a bag (kilobyte - a short email). 1,024 bags make a box (megabyte - a photo). 1,024 boxes make a crate (gigabyte - a movie). 1,024 crates make a shipping container (terabyte - your entire photo library). Each level is roughly 1,000× bigger than the last!
This introduction covers The Lego Building Blocks within Storage Units for GCSE Computer Science. Revise Storage Units in 3.3 Data Representation for GCSE Computer Science with 15 exam-style questions and 18 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 1 of 10 in this topic. Use this introduction to connect the idea to the wider topic before moving on to questions and flashcards.
Practice questions for Storage Units
How many bits make up one nibble?
Explain what is meant by colour depth and describe how increasing the colour depth affects both the image quality and the file size.