It's Friday, so let's all relax and learn about Colin Riley's Z80 homebrew computer. Part 1: Introduction, Part 2: Interrupts and timers, Part 3: File system, SD Card and VRAM, Part 4: VRAM, display modes and a simple shell, Part 5: Implementing preëmptive multithreading.
A few months ago there was a list of links to classic video game emulators posted. Very recently, I'm pleased to report, those links all came true. The Internet Archive bespoke upon aforementioned consoles, computers, and mileposts on our way to the tech utopia of today, (seriously, where's my flying car?) and they asked us to do something: Imagine every computer that ever existed, literally, in your browser. And it was so. I have absolutely no affiliation with jscott, btw. Thought I should disclose that.
The ZX Spectrum's chief designers reunited 30 years on, discussing what became 80s Britain's most popular home computer and gaming platform, despite stiff competition from the technically superior Commodore 64.