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Representing Data with Images and Sound: Bringing Data to Life

CO209 Online course

Learn how data is represented through media; audio, visual and text.

Key stage 3 Key stage 4
Free online course Join now 2 hours per week

Learn how data is represented through media; audio, visual and text.

This online course explores how computers do interesting things with data. You’ll discover how to represent and manipulate text, images and sound and compression and other algorithms.

We recommend that learners have a basic understanding of Python, for example gained from our Programming 101 course for beginners

An understanding of binary is helpful but not necessary (you may be interested in our How Computers Work course)

Due to its section on the representation of images, this course includes several steps and questions based around visual content.

You will be able to:

  • Describe how computers represent text, images and sound in binary
  • Explain how text is represented digitally by using common text encoding (ASCII and UTF-8)
  • Produce your own emoji in bitmap and vector form
  • Investigate the physics of sound, and how sampling allows computers to represent sounds
  • Compare lossy and lossless compression

This course is part of the Teach GCSE computer science certificate.

Teach GCSE computer science

Our certified professional development programme will equip you with the subject knowledge and confidence to successfully teach and lead GCSE computer science.

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Also part of Teach GCSE computer science:

An introduction to algorithms, programming and data in GCSE computer science - face to face

Create some simple block-based computer programs and discover how to implement them in the text based language Python.

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An Introduction to algorithms, programming and data in GCSE computer science - remote

Create some simple block-based computer programs and discover how to implement them in the text based language Python.

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An Introduction to Computer Networking for Teachers

Build your knowledge and understanding of computer networks as a computer science teacher

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