The early 80s games machine.
The Welsh home computer, similar to the Tandy CoCo.
The well marketed budget computer became a 1980s hit after a last-minute team effort.
The low-cost 8-bit micro notable for using the Forth language.
The ambitious 1980s initiative to create a digital record of the UK, utilising LaserDisc.
The British 8-bit gaming computer that found unexpected success in the French market.
The innovative Z80 microcomputer with advanced features and striking design.
The 1980s educational computer in the UK
The machine that kickstarted the UK home computer industry.
The EDSAC was a 1947 valve computer built by Cambridge University.
How audio is stored in a computer system.
A Finite State Machine (FSM) is a system that moves through a limited number of predefined states in response to inputs, enabling predictable, sequential control of tasks.
How can we count with only 2 digits?
What are databases and why are they used?
What are vector graphics and how is this different to bitmap graphics?
An explanation of bitmap graphics and the meaning of the term colour depth.
What are exceptions and why are they used in programming?
What is pseudo code and why is it used?
What is Reverse Polish Notation (RPN) and why is is used?
How is Backus-Naur Form used to describe programming languages?
An explanation of Binary Coded Decimal (BCD) as an alternative to floating point binary.
What is a binary tree data structure and how does the algorithm work?
What are Abstract Data Types?
HTTP and SMTP are protocols, but what is a protocol?
What is data compression and how does it work?
What is the difference between compiled and interpreted code and what are the benefits of each approach?
What are Virtual Machines (VMs) and why are they useful?
What's the difference between static and dynamic memory?
How does the merge sort algorithm work?
Why is internet via cable still used in preference to wireless and what is the difference between fibre optic and copper cables?
What are the advantages of satellite internet versus ground-based cell towers and when is each appropriate?
What is the difference between a Local Area Network (LAN) and and Wide Area Network (WAN)?
What is the difference between the client-server model of networking and peer-to-peer?
What are thin and thick clients and what are the benefits of each approach?
What is a bus network?
What is a star network?
What are hash codes and how are they useful in programming?
An introduction to Register Transfer Notation and how it is used to describe the fetch/execute cycle of a CPU.
What is the difference between serial, sequential and random file access?
What does GNU/Linux mean and how is it different to Linux?
An explanation of Object Oriented Programming with examples in Python.
An explanation of the Von Neumann computer architecture and how registers are used.
How are negative numbers represented in binary?
What's the difference between the imperative and declarative paradigms in programming languages?
How real numbers can be represented in binary using floating point with the IEEE 754 standard.
How are decimal numbers converted to IEEE 754 standard floating point in binary?
An introduction to assembly language, instructions and addressing modes.
What is assembly language and how does it relate to machine code?
How does the bubble sort algorithm work?
Why does a computer need an operating system (O/S) and what does it do?
What are linked lists and how are they used?
How does the insertion sort algorithm work and how can it be implemented in Python?
How does the binary search algorithm work and how is it better than a linear search?
How can transistors be used to build logic gates?
How is algebra used to represent electronic logic gates and why is this useful?
What do the terms SIMD, MISD, MIMD and SISD mean in relation to CPU architecture?
What's the difference between RISC and CISC CPUs?
TCP/IP is the protocol underpinning the internet. But what is it and what does it do?
How are logic gates used to do calculations?
Using fixed point arithmetic to represent real numbers.
Explaining why computers use binary numbers instead of decimal.
What are logic gates? What do logic gates do and why are they relevant?
Solving a Raspberry Pi not receiving the EDID message over HDMI
The Raspberry Pi models 1-5 performance evaluated using common benchmarks such as Sysbench, Linpack, Dhrystones, Whetstones.
How to build a water detector for the Raspberry Pi using the GPIO header
How to test a Raspberry Pi for faults.
How to install the Raspberry Pi camera module and take a picture on the command line.
How to use a deep neural network with OpenCV to recognise objects using a Raspberry Pi camera.
How to determine the version, code name and kernel version of the Raspberry Pi OS that is currently installed using the command line.
Installing the Raspberry Pi Hailo AI accelerator module onto a Raspberry Pi 5.
How to configure wifi via the command line on a headless Raspberry Pi in the 64-bit bookworm version of Raspberry Pi OS.
How to install the active cooler module (heatsink and fan) on a Raspberry Pi 5.
How to get started writing 64-bit ARM assembly language using a Raspberry Pi.
How to play audio over bluetooth from a Raspberry Pi over the command line.
Example circuits and explanation for the 555 timer chip.
Taking a screenshot with the OWON Oscilloscope
Build a single digit 7 segment LED display for the 3-bit binary adder circuit.
A practical guide to building a circuit to add two 3-bit numbers using 7400 series logic gates using full adders and half adders.
An explanation of how an SR latch logic circuit works in detail.
What are SR and JK flip-flops and latches and how do they work?
A description of Time-Based One-Time Passwords.
How to change the battery in a Synology 2-Bay NAS unit.
Free computer science content for A-Level and AS-Level courses
How to solve a full /boot partition on Linux Mint
Instructions for using the Kowo standing desk control box.
A simple web server in Python that plays a sound file when a URL is visited. This can be used as an alarm or notification.
This guide shows various examples of manipulating arrays using Numpy in Python
What is the difference between Linux distributions? How to choose the distro that's right for you?
How to use the shebang line with Python when the interpreter may be at any path.
Sometimes you need a simple SSL web server for software development or testing and don't want to start up a heavyweight web server.
How to turn on, off, enumerate and change the colour of LIFX smart light bulbs using Python on the local network.
A beginners guide to encoding video using ffmpeg. How to change the video encoding and select specific audio tracks and subtitles.
AMD first generation Ryzen crashes, mouse pointer freezes (black screens) and the machine reboots when used with Linux
