TutorSyntax — Learn. Practise. Build.
COMPUTING 11–14 · LEARN. PRACTISE. BUILD.

Data representation

Discover how numbers, text, pictures and sound become digital information.

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What you will explore

  • Representation of numbers
  • Representation of text
  • Representation of images
  • Representation of sound
  • Compression

Start with the idea

Digital systems store and process information as bits. A representation scheme tells a computer how patterns of bits should be interpreted, such as a number, character or pixel.

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Try it yourself

  • Convert decimal 25 into eight-bit unsigned binary.
  • Explain why an image file needs both pixel values and information about its dimensions.
  • Use the existing TutorSyntax binary converter to check your answer.

What could this lead to?

Explore how the skills behind this topic appear in work:

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Check your understanding

Project and progression

This original TutorSyntax activity can be used before GCSE study or for enrichment. Its topic grouping relates to Ada’s published 11–14 catalogue, but it is not a confirmed GCSE specification.

Open practical activity or learning resource →See GCSE and Level 3 routes →All 10 topics →

Independent TutorSyntax teaching material · last reviewed 22 October 2026. Ada’s availability labels may change.