How Computers Work 

1.0.1 What is computer science and how can it help us?

1.1.1 Abstraction

1.1.2 Abstraction in data representations

1.1.3 Notional machines

1.1.5 CPU and memory

1.1.7 Summary

1.0.3 Further Reading

1.1.4 Abstraction

2.1.1 The deep secret of computer science

2.1.3 State

2.1.5 An e-commerce site

2.1.7 Why does turning it off and on again work?

2.2.1 A notional machine: files

2.2.3 Modularity

2.2.4 Applications

2.2.6 Debugging

2.3.4 Summary

2.2.5 Looking inside applications

2.1.4 State

2.2.2 Files

2.2.7 Debugging an application problem

2.3.3 Summative quiz

3.1.1 Networks

3.1.2 The internet

3.2.1 Security threats

3.2.3 Encryption

3.2.4 Security defenses

3.2.5 The perils of the password: Interview with Sarah Wiseman

3.2.8 Summary

3.1.3 Networks

3.2.6 Security: what have you learned?

3.2.7 Case study: debugging a web load error

4.0.2 What is a website?

4.1.1 Websites

4.1.2 Networks and the Web

4.1.3 Security and the Web

4.1.4 State and the Web

4.1.5 Clients and servers

4.1.6 Embedding and APIs

4.1.7 Your data

4.2.5 MOOC Summary

4.2.4 Further Learning

4.0.1 Motivating problem

4.1.8 Websites

4.2.3 Summative quiz