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Representing images
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Pixels, bitmaps, and binary

Pixels, bitmaps, and binary

Bitmap image shown as a grid of pixels with width W, height H, a labelled pixel, and the formulae total pixels = W × H and bitmap size in bits = W × H × D A computer stores images in binary, so a picture must be turned into data. In a bitmap, the image is a grid of tiny coloured squares called pixels.

Representing images Lesson

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

Step-by-step lessons on AQA GCSE Computer Science Representing images. Each one builds up to exam-style questions. Build strong foundations in binary, logic and core programming constructs before moving on to the more complex algorithm design and evaluation questions.

Lessons