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Content description VCDTDI046

Digital Technologies / Levels 9 and 10 / Data and Information
Content description
Analyse simple compression of data and how content data are separated from presentation
  1. explaining how simple compression schemes reduce the size of repetitive data, for example how run length encoding reduces the size of images
  2. explaining the difference between lossy and lossless compression, for example the difference between JPEG and PNG images
  3. explaining codecs for audio-visual compression, for example common codecs for video formats
  4. generating a layout or report in a database or applying a style sheet to a web page
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