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Representing images

Representing images

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Question 6

An embedded systems engineer is designing two graphical telemetry displays, Grid Alpha and Grid Beta, each represented as an uncompressed bitmap of 16×16 16 \times 16\,16×16 pixels.

  • Grid Alpha currently displays exactly 4 unique status colours.
  • Grid Beta currently displays exactly 5 unique status colours.

The engineer decides to expand the range of displayed statuses, so that:

  • Grid Alpha now displays exactly 5 unique status colours.
  • Grid Beta now displays exactly 8 unique status colours.

State the impact of this change on the minimum file size of both Grid Alpha and Grid Beta.

[2]
Markscheme

Representing images Questions

  1. GCSE
  2. /Computer Science
  3. /Representing images

26 exam-style questions on AQA GCSE Computer Science Representing images. Each one has a worked solution and a mark scheme showing where the marks go.

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