Despite its low initial price, the Shield K1 continues to put modern Android tablets to shame.

The screen resolution of smartphones has increased dramatically over the last ten years. Have we reached a point where further improvement is just a waste of money?

Is it possible to live without Google and the like, and still use modern, portable computing devices? I still don't know.

This is a landing page for my various articles on building a period-appropriate CP/M system using the RC2014 bus.

Using an RC2014-based retrocomputer with genuine RS232 peripherals requires support for voltage level conversion. Although converter modules are inexpensive and widely available, I wanted to design something that would plug into an RC2014 backplane, just for neatness.

The Pronto offers a salutary lesson in how an excellent product can die, leaving a gaping hole in the market that nobody wants to fill.

The Cowon D2 DAB was a media player ahead of its time. There was nothing like it in 2005, and there still isn't.

A landing page for my various CP/M articles and utilities.

Shared subscriptions are a 'new' feature in JMS, that seems to be poorly understood, particularly in a clustered environment. In this article, I explain how shared subscriptions are supposed to work, and what the implications are for load sharing and fault tolerance.

No 80s computer is complete without the chucka-chucka-chucka sound of a floppy disk drive doing its thing.

The Pi Pico is an impressive microcontroller for its size and cost, but it lacks specific non-volatile memory. This article explains how to use the program flash ROM for that purpose.

An 80's-style 8-bit computer has to be cable of making 80's 8-bit sound. In this article I describe adding a sound board to my RC2014 system.