The homebrew vacuum-tube computer the internet fell for this week reminds us how far we've come.

The registers, counters, 8-bit arithmetic logic unit, ring-oscillator clock, and small tube RAM are all assembled from that single building block, an approach Hackaday traces to the Apollo Guidance ...

The project, called The Tube Computer MK3, was built by Mike, a self-taught electronics tinkerer who recently documented the ...