Revision notes, activities, lesson plans, teaching ideas, and other resources for GCSE, A-Level, and IB Computer Science teachers and students.
Programming languages - from Scratch to machine code
The CS Field Guide has a very comprehensive guide to different types of pro...
Assembly language simulators
There are several assembly language simulators available for use online. Si...
Little Man Computer (LMC)
The Little Man Computer (LMC) is a software simulator of a simple computer ...
Lesson - Data representation - sound
This download contains all lesson resources necessary to teach students how...
Predictive placement is a feature of some CAD systems that enables more e...
AI to help emergency dispatch phone operators
The Singapore Civil Defence Force (SCDF) may trial an AI system to help tra...
Mobile Data Terminals (MDT)
MDT technology is referenced in the case study booklet, with such systems b...
TriTech Software Systems is a company that specialises in Computer Aided Di...
Spillman are another company with a range of CAD systems. Their Spillman Fl...
Click here for recommended AQA A-Level Computer Science textbooks.
188.8.131.52 The processor and its components
184.108.40.206The fetch execute cycle
220.127.116.11 The processor instruction set
18.104.22.168 Machine code and assembly language operations
Binary shifts - arithmetic and logical
This worksheet contains practice questions for performing logical shifts and arthimetic shifts on binary numbers. You can download the worksheet and the answers.
22.214.171.124 Factors affecting processor performance
Factors Affecting CPU Performance
This video is designed specifically for the Edexcel IGCSE Computer Science syllabus. The CPU's clock speed and its relationship to the fetch-decode-execute cycle is explained. Then cache and multi-core CPUs are examined to explain how they affect the overall speed of a processor. The video is quite heavy on theory, but that is the nature of the topic.