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Representation of data in computer systems

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In this topic, learners will gain an understanding of how different data types are internally represented in binary. Learners are expected to know that a kilobyte = 1024 bytes, a megabyte = 1024 kilobytes etc.

For bitmap images, working with the Netpbm portable bitmap file format will allow learners to create images and view their representation in a text editor such as Notepad.

Resources

  • Definitions of units (ZIP, 768KB)
  • Binary format (ZIP, 1MB)
  • Converting positive denary whole numbers (ZIP, 958KB)
  • Adding 8-bit binary numbers (ZIP, 948KB)
  • Hexadecimal numbers (ZIP, 1MB)
  • Character sets (ZIP, 1MB)
  • Images (ZIP, 1MB)
  • Metadata in images (ZIP, 2MB)
  • Sound (ZIP, 1MB)
  • Instructions (ZIP, 1MB)
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