Uploaded April 2020 | Updated September 2026, 1 hour ago
The National Museum of Computing at Bletchley Park houses a unique collection of computers.
Our expert team have maintained, restored and rebuilt some of the most important systems in Britain's business, war-time and personal computing history.
You can't see our amazing collection during Covid-19, but you can speak to the experts who'd usually be on hand in our galleries as TNMOC is running a series of online video Q&As.
In this video, our team answer a question about how long stocks of valves will last to keep our Colossus replica working. Colossus was the world's first programmable, electronic, digital computer.
To ask a question, please do so on Twitter using the #askTNMOC hashtag.
If you would like to support us through these challenging times, please consider purchasing some our of special merchandise at our online shop tnmoc.org/tnmocshop
The National Museum of Computing at Bletchley Park houses a unique collection of computers.
Our expert team have maintained, restored and rebuilt some of the most important systems in Britain's business, war-time and personal computing history.
You can't see our amazing collection during Covid-19, but you can speak to the experts who'd usually be on hand in our galleries as TNMOC is running a series of online video Q&As.
In this video, our team answer a question about how long stocks of valves will last to keep our Colossus replica working. Colossus was the world's first programmable, electronic, digital computer.
To ask a question, please do so on Twitter using the #askTNMOC hashtag.
If you would like to support us through these challenging times, please consider purchasing some our of special merchandise at our online shop tnmoc.org/tnmocshop
