Multi-source Z80 assembly programming for CP/M

In a market dominated by the Amazon Kindle, it's easy to forget that Sony, not Amazon, made the first commercially-successful e-book reader.

How worried should we be, that we're wasting electrical energy for no benefit?

How a non-existent English village ended up on maps, and the implications this has for how we handle information.

The built-in cd command in the bash shell is not as smart as it could be; but it's a little fiddly to extend its functionality.

A military-surplus steel ammunition box makes a great housing for a high-current, outdoor 12V power supply. This article gives some ideas about how to build one.