Tinkerer builds working room-sized 8-bit computer using 460 recycled 1950s Soviet vacuum tubes

Retro-Computing Project Unveiled

An electronics tinkerer, Mike, has showcased his latest retro-computing project, a functional 8-bit computer built entirely from recycled 1950s vacuum tubes. This third iteration of his tube computers avoids modern components like microprocessors, focusing instead on historical technology.

Hardware Specifications

The computer utilizes 460 Soviet-era 6N3P (6Н3П-ЕВ) double triode tubes, manufactured approximately 50 years ago, alongside era-appropriate germanium diodes. These tubes have an operational life of about 500 hours, necessitating spare parts and maintenance.

Operational Characteristics

Starting the computer, dubbed The Tube Computer (MK3), requires a 10 to 15-minute warm-up period, followed by a mandatory reset to synchronize the tubes. The tubes generate significant heat, making the computer room consistently warm and requiring a fire extinguisher nearby.

Computational Capabilities

The computer's architecture supports an arithmetic logic design capable of performing five essential functions: sum, carry, not, increment, and XNOR. Its instruction cycle is non-pipelined, featuring a six-step fetch and a single-execute cycle.