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.

The Youtuber Shadowman39 has built a functional, mechanical 8-bit computer with the construction toy for roller coasters and towers K'nex. The machine can process binary numbers between 0 and 255 or ...

[James Sharman] designed and built his own 8-bit computer from scratch using TTL logic chips, including a VGA adapter, and you can watch it run a glorious rotating cube demo in the video below. The ...