Virtual Colossus

#VirtualEnigma is coming to a browser near you to celebrate Alan Turing's Birthday! That means you've only got to wait until 23rd June 2021. It is fully browser based so no install required & should run on most modern systems. From WW2 to WWW @tnmoc @bletchleypark @threejs_org

Level up your May Half Term at @tnmoc with STEM Bytes 2026! Coding, robotics, VR/AR await. Book: eventbrite.com/e/may-half-ter… #STEM #BletchleyPark #MiltonKeynes #CodingForKids #HalfTerm

Hut 3 - Codebreaking Hut Then and now: Hut 3 before restoration in 2013, and today. The original building has been carefully restored to reflect its 1941 condition. Discover the stories of Hut 3 and more at Bletchley Park.

🚨 Call for Entries: The Tony Sale Award 2026! Recognising worldwide excellence in computer conservation. Hardware or software, we want to see your practical projects! 🏆 Awards Event: 29 Sept 2026 @ @tnmoc ⏰ Entry Deadline: 30 June 2026 Enter here: computerconservationsociety.org/sale-award/ind…

Work is progressing on the numeric only SG-41Z model of Virtual Schlüsselgerät 41 used for sending weather information. The print wheels were tricky but are done. Another difference is the SG-41Z only has 5 of the sensing arms (6 on SG-41) and 15 bars on the cage (25 on SG-41)

Love computing history? We’re looking for volunteers to help at our world-class collection! Join our community on Tuesdays, Thursdays, or weekends to support visitors and get hands-on with tech history. Half-day and full-day slots available. Interested? tnmoc.org/volunteer

One ticket, a whole year of discovery at Bletchley Park. Your visit doesn’t end when you leave. Your admission is a 12-month Annual Pass, giving you unlimited return visits for a whole year. Come for the history, learning, or a great day out and return whenever something new catches your interest. Book tickets here: ow.ly/RRw050YSpLU

On this Day! In 1941 The Zuse Z3 was completed by Konrad Zuse in Berlin. I's the world’s first working, program-controlled, and fully automatic digital computer. It was a Turing-complete machine and implemented essential components of modern computing . #ZuseZ3 #TuringComplete

10 May 1940: German invasion of France begins. #BPark begin to see clusters of Enigma indicator settings as theorised by John Herivel.

OH HEC… GUESS WHO’S BACK? 💻 After a year away, the legendary HEC 1 has returned ! The prototype for the UK’s first best-selling business computers (BTM), it’s a true heavyweight of tech history. Come see it alongside Colossus and The Bombe #ComputingHistory #HEC1 #BTM

07 May 1941: British destroyer HMS Somali captures code books and June's Enigma settings from German weather observation ship München.

On this day in 1949, the EDSAC at Cambridge University ran its first programs! It calculated a table of squares and a list of prime numbers, becoming the first practical general-purpose stored-program computer in regular service. The digital world started here. #EDSAC #OnThisDay

How did a house become a codebreaking centre? Watch Part One of The Buildings of Bletchley Park in full on YouTube: ow.ly/HhnY50YT5n0

@franklinheath Thank you!

On 4 May 1944, Bletchley Park codebreakers saw the German Abwehr testing a cipher machine they had not encountered before. This turned out to be the SG-41, and today is a great day to try out the interactive 3D simulation : sg41.virtualcolossus.co.uk. Thanks @VirtualColossus !

Meet the Bletchley Park genius who cracked one of Nazi Germany’s most secure codes. Helene Aldwinckle’s breakthrough on the ultra-secret Pink Luftwaffenführungsschlüssel gave the Allies the power to read critical Luftwaffe messages in real time. Let's explore: (🧵)

The Evolution of Enigma. Enigma machines developed over time, with different versions used by different countries. The German military introduced a more advanced model with an added feature that made messages far harder to decipher. Elsewhere, simpler versions remained in use, closer to earlier designs. On the left is the Enigma A320, without a plugboard. On the right is a German military Enigma, equipped with a plugboard. A closer look at A320 is available in Block C Visitor Centre at Bletchley Park. #BletchleyPark #Enigma

🚨 Call for Entries: The Tony Sale Award 2026! Recognising worldwide excellence in computer conservation. Hardware or software, we want to see your practical projects! 🏆 Awards Event: 29 Sept 2026 @ @tnmoc ⏰ Entry Deadline: 30 June 2026 Enter here: computerconservationsociety.org/sale-award/ind…

A very happy 90th Birthday Professor Brian Randall! I had the chance to meet him & his sons in person last year and thank him for recovering the information about Colossus in the 1970s. It was that beginning that has led to the knowledge we have about it today.

Unlock a year of discovery at @tnmoc with an Annual Ticket! See the world’s largest collection of functional historic computers—from the rebuilt Colossus to 80s retro classics. - Unlimited entry for 12 months - Includes onsite and online events Get yours: eventbrite.com/e/112200807636…

🎙️ New Podcast (E190): Josh Cooper Wartime codebreaking demanded more than intelligence - it required diplomacy, discretion, and strong organisation to navigate complex intelligence networks. Even exceptional contributions could be overlooked, as this episode explores through the story of Josh Cooper. Featuring Dr Thomas Cheetham, Research Officer at Bletchley Park, who offers insight into Cooper’s career as head of the Air Section. Available on Apple Podcasts, Spotify, and all major platforms. Listen here: ow.ly/A3HA50YOSQ1 #BletchleyPark