Computing systems: Understanding hardware, networks and security
Exploring how computer systems work, focusing on hardware, networks, data storage, data packets, troubleshooting and security.
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Computing systems: Understanding hardware, networks and security
You're viewing: 2026 Scheme. This is the updated scheme for September 2026 onwards. Explore the current scheme
Unit outcomes
Pupils who are secure will be able to:
- Describe how computer systems have changed over time.
- Explain why computers and networks are important in the modern world.
- Describe how hardware works together to send information across a network.
- Explain how data is broken into packets, travels across a network and is reassembled at its destination.
- Troubleshoot simple real-world hardware and network problems using logical steps.
- Explain why networks need security and how additional layers of protection help keep accounts and information safe.
There is an option to invite the school’s IT technician to visit the class for a question-and-answer session to find out what the school has in place to protect the network as part of Lesson 5: Keeping networks secure.
Suggested prior learning
Computing systems: Websites, search and storage
Get startedLessons
Lesson 1: From codebreaking to AI
Lesson 2: A file’s journey
Lesson 3: A website’s journey
Lesson 4: Troubleshooting computer problems
Lesson 5: Keeping networks secure
Key skills
Key skills
Key knowledge
Equipment list
Equipment needed across all lessons in this unit.
This list does not include equipment which is usually readily available in the classroom (e.g pencils, A4 paper etc)
Full equipment list for the subject
Related content
Unit resources
Knowledge organiser – Computing Y6: Computing systems: Understanding hardware, networks and security
Aimed at pupils, two pages providing key facts and definitions from the unit ‘Understanding hardware, networks and security'.
Vocabulary display – Computing Y6: Understanding hardware, networks and security
A display version of the vocabulary from the unit 'Understanding hardware, networks and security'.
Cross-curricular opportunities
- History: Exploring how codebreaking and computer systems developed during and after World War 2 and how technological change has shaped modern computing.
- RSE & PSHE: Health and wellbeing – Wellbeing online: Considering the benefits and risks of using the internet, including privacy, personal data and making informed choices about sharing information online.