One of my clients has a device with a model number of TRS-21. I instinctively call it the Trash 21 (back in the day, many people referred to the TRS-80 as the Trash 80 because of its reputation). My ...

While most of us now remember Radio Shack as a store that tried to force us to buy batteries and cell phones whenever we went to buy a few transistors and other circuit components, for a time it was ...

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The only thing that doesn't make much sense to me is using a teensy 4.1 for the keyboard; that's a Cortex M7 running at 600 MHz, an insane amount of overkill. A teensy 2 or pi pico would do just fine, ...