Data Representation in Computing: Bring Data to Life
Learn how data is represented through media; audio, visual and text.
This online course from the Raspberry Pi Foundation 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.
- Units of information
- Character encoding
- Representing images
- Representing sound
- Data compression
Learning on this course
On every step of the course you can meet other learners, share your ideas and join in with active discussions in the comments.
What will you achieve?
By the end of the course, you‘ll be able to...
- Describe how computers represent things in binary
- Explain common text encoding (ASCII and UTF-8)
- Investigate the physics of sound, and how sampling allows computers to represent sounds
- Compare lossy and lossless compression
- Evaluate whether to use a bitmap or a vector image
Who is the course for?
This course is designed at GCSE-Level to A-Level educators and learners. This course has a focus on supporting educators looking for an engaging way of teaching GCSE Computer Science concepts.
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.
What software or tools do you need?
To complete optional coding challenges in this course you will need to download a Python IDE (Integrated Developer Environment) such as Mu.
This course is part of the National Centre for Computing Education (NCCE). Funded by the Department for Education and partners, we aim to change the way computing is taught in schools across England, and enable more young people to benefit from studying this important subject.
If you are a teacher in England you can get free upgraded access to this course, and use it towards NCCE certification. To do this, you must join the course through the Teach Computing website
Endorsers and supporters
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