Images

GCSE Computer Science Resources
14-16 Years Old

48 modules covering every Computer Science topic needed for GCSE level, and each module contains:

  • An editable PowerPoint lesson presentation
  • Editable revision handouts
  • A glossary which covers the key terminologies of the module
  • Topic mindmaps for visualising the key concepts
  • Printable flashcards to help students engage active recall and confidence-based repetition
  • A quiz with accompanying answer key to test knowledge and understanding of the module
View the GCSE Resources →

KS3 Computing Resources
11-14 Years Old

We’ve created 45 modules covering every Computer Science topic needed for KS3 level, and each module contains:

  • An editable PowerPoint lesson presentation
  • Editable revision handouts
  • A glossary which covers the key terminologies of the module
  • Topic mindmaps for visualising the key concepts
  • Printable flashcards to help students engage active recall and confidence-based repetition
  • A quiz with accompanying answer key to test knowledge and understanding of the module
View the KS3 Resources →

Candidates should be able to:

  • explain the representation of an image as a series of pixels represented in binary
  • explain the need for metadata to be included in the file such as height, width and colour depth
  • discuss the effect of colour depth and resolution on the size of an image file.

How can an image be represented in binary?

Bitmap images

Bitmap images are made up of individual pixels. The colour of each pixel is represented as a binary number so the whole image is therefore stored as a . . .

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