Teach Computing

Revision notes, activities, lesson plans, teaching ideas, and other resources for GCSE, A-Level, and IB Computer Science teachers and students.

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CommandPoint CAD

CommandPoint by Northrop Grumman offers a range of CAD systems for various ...

CAD+911 System

TriTech Software Systems is a company that specialises in Computer Aided Di...

London Ambulance CAD failure

The 1992 London Ambulance Service CAD failure is probably the most notoriou...

Washington State 911 Failure

A 911 emergency telephone system in Washington State and Oregon shut down f...

London ambulance failure (2017)

A 2017 failure of a London ambulance dispatch system is believed to have le...

Computer Aided Dispatch outage

A 911 system failure left emergency calls unanswered and is said to have co...

Load balancing videos

This short article and the associated video explain 5 load balancing algori...

Intergraph Computer-Aided Dispatch (I/CAD

Intergraph Computer-Aided Dispatch (I/CAD) is a system offering many of the...

Boolean logic worksheet pack

These three Boolean logic worksheets have exam style questions on logic sta...

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4.1 Computational Models

Computational models

Edexcel GCSE Computer Science: Machines & Computational Models

This video covers computational models. It also includes virtual Machines along with the Sequential, Parallel, and Multi-agent computational models that are included in the Edexcel IGCSE course.


Updated: 2017-11-05
Input process output model

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.


Updated: 2018-02-17