Retired UK hobbyist builds 8-bit computer from 460 recycled tubes, all wired as NOR gates, on a 190 x 130 cm wall panel The machine is expected to run a flight simulator program once completely ...

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 ...

Long before electricity was a common household utility, humanity had been building machines to do many tasks that we’d now just strap a motor or set of batteries onto and think nothing of it.