Scenario: You have a 128 GB USB drive. How many 4K photos can you store if each photo is 8 MB?
Step 1: Convert USB drive to same unit as photo
128 GB × 1,024 = 131,072 MB
Step 2: Divide total space by photo size
131,072 MB ÷ 8 MB = 16,384 photos
Answer: You can store approximately 16,384 photos on the 128 GB USB drive.
This deep dive covers Real-World Calculation: File Size for Storage Planning 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 6 of 10 in this topic. Use this deep dive 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.