Revision notes, activities, lesson plans, teaching ideas, and other resources for GCSE, A-Level, and IB Computer Science teachers and students.
UK Computing Laws
This video from Computer Science Tutor covers the main UK computing laws re...
Wireless Networking (Wi-Fi, Security, and Hardware)
This video about wireless networking includes everything that is needed for...
Network topology videos
These four excellent videos from Computer Science tutor cover the four ma...
These four videos explain the main networking protocols that students are l...
Embedded Systems video
This short video is a good over of embedded systems, covering the main poin...
Representing Text in Binary
This video clearly explains the two main ways of representing text in binar...
Types of Malware
This video explains the various types of malware including viruses and troj...
Protecting against Malware
Following on from the Types of Malware video, this video explains technique...
Video: Network Security #1
This video gives an overview of the threats to networked computer systems, ...
2.1.1 Fundamentals of computer systems
Click here for recommended OCR GCSE Computer Science textbooks.
(a) Define a computer system
Input-Process-Output (IPO) Model
The Input-Process-Output model is a simple topic but some students sometimes find it confusing. This video gives a good overview of why we think about computer systems in this way. Note that this explanation doesn't include Storage and Communication (as required by some GCSE courses) - instead it includes Storage and Feedback.
(e) Ethical, environmental and legal considerations
Environmental Impacts of Computing
The Story of Electronics and the High Tech Trash quiz make good lesson starters.
Several photo essays are available online which highlight the problems caused by electronic waste:
The toxic chemicals found in e-waste are explained by National Geographic and GreenPeace.