We have occasionally featured vacuum tube computers here at Hackaday ... the Motorola original but it is (just) enough to be a CPU. The tubes are arranged in groups of four with heaters in series ...

A vacuum tube is just that: a glass tube surrounding a vacuum (an area from which all gases have been removed). What makes it interesting is that when electrical contacts are put on the ends ...

The transistor computer uses over 2000 individual transistors to implement everything comprising the 11-bit CPU. The creator ... needs to work on debugging vacuum tube computers anymore.

While the first computers were mechanical and famously ran on vacuum tubes, there were other schools of thought that introduced a different kind of computer – one that ran on water. In the 1930s ...

Amplifiers that use vacuum tubes instead of – or alongside – solid-state electronics are marketed on the basis of their warmer, more inviting sound. Now Écoute has come up with a very unusual way to ...