The story of the Poles was mentioned in “A Man Called Intrepid”. Not sure how factual, but there was a story about them bombing a truck carrying enigma and faking debris.

will outa the inbetweeners

I would like to commend and to thank Dermot, the Nephew of Alan Turing, for pursuing the truth instead of simply writing a book that praised only his Uncle.

Amazingly skilled and extremely talented. That is my reaction to the staff at the UK Post Office who built Colossus and the code breakers at Bletchley Park. A suggestion for the Museum: I spent my career in the computer industry, but I did not understand Phil Hayes portion of the reenactment. I am not suggesting that Phil’s portion be “dumbed down “, rather do what I asked my teams to do- explain it so that my mother could understand it.

.I used to be a pdp 11/70 operator. Remember backing up the wrong way. Wiped out a companies entire days work. Remember performing many Sysgens.

I never worked with a PDP-11, but did work with a Data General Eclispe S/130, which I think is in the same class. I still dream about the work I did over 40 years ago. Sean, the likes of us are on the way out, eyes and all... But I think we may have had the best of it.

I feel we let the polish nation down during the second world war. Easy for me to say now but they suffered terribly. My father was in the far eastern fleet (royal navy) and I am proud he fought against the tyrannical powers of the axis powers during this time.

I love Sophie !!! She talks computer She is a computer <3

Ive ALWAYS wanted a bbc and Umi-2 system but, It's been impossible to find in the USA

Fantastic presentation! Really enjoyed it! Thank you 👍

Enigma Poland 1932. KZbin.

That paper is spinning fast enough to cut your fingers off!

How well was this computer known? Feeding Russian traffic to a computer named Colossus that takes over the world is the plot of The Forbin Project.

My lab had over 30 PDP 11/xx including 45, 60, 70 & 80’s. The disks had 5 platters holding the RS11M OS and my designed OS. They were used in groups of 3 to 5 integrated computers with all connected through busses! Amazing machines. The front panel was octal, but internally it was hexadecimal!

Fantastic work. Visiting BP is on my bucket list. Thank you for these presentations.

Can the Bletchley Park Trust be encouraged to send £150k worth of visitors your way?

@6:44 Let's see so the lunar computer is 32kg, 55 watts and can do 50,000 - 100,000 instructions per second. A modern smarphone is less than 200g, consumes only a few watts and can do trillions of instructions per second, I think that's what poeple are talking about.

"How did this happen?" What a great presentation. Thank you for this, much appreciated. Looking forward to visit the museum and pay my respect in 2 weeks.

One of the most interesting and engaging videos on YT. Thank you

The presentator biased and repetitive comments about 'Buzz' Aldrin durant last phases of lunar landing (P64, P66 ?) are symptomatic of his oversized and exuberant ego.

Thank you Peter and Jerry - brilliant in every respect.

Who developed the mathematical equations of the operational and system software? Was the LM manufacturer , Grumman aircraft engineers, supervising the small and inexperienced NASA software team?

REPORTED FOR MISINFORMATION

What a great guy! I just watched the entire video even though I didn’t search for it.

Thank you for share!

Working as a volunteer at TNMoC and learned the power up sequence today.

10:23

I love how unfixable are today's motherboards and our biggest barrier in landing on Moon again.

what the heck happend to Uk´s tech idustri .

Just odd they built all this hardware and “software” if this never actually happened. I can’t stand people who say we never went.

Here's the document translated into English: ...from one day and the keys corresponding to them. The results can also be presented as permutations (A1) to (A4). However, we limit ourselves to giving only the first four permutations, which, as we have shown, are sufficient to obtain the desired result. We provide them again in the form of cycles, as economically more advantageous for our further purposes: A1 = (as)(br)(cw)(d1)(ev)(fh)(gn)(jo)(k1)(my)(pt)(qz)(uz) A2 = (ay)(bj)(ct)(dk)(e1)(fn)(gx)(h1)(mp)(ow)(qr)(su)(vz) A3 = (ax)(b1)(cm)(dg)(e1)(fo)(hv)(ju)(kr)(np)(qs)(tz)(wy) A4 = (as)(bw)(cr)(d1)(ep)(tt)(gq)(hk)(iv)(lx)(mo)(nz)(uy) We also provide permutation (S), which, according to our assumptions, we consider the public part as known. S = (ap)(b1)(cz)(fh)(jk)(qu)(da)(eo)(gi)(mn)(ol)(rs)(tv)(wx)(y) For convenience, we also provide permutation (P) and its powers: P = (abcdefghijk1mnopqrstuvwxyz) P^2 = (acegikmoqsuwy)(bdfhj1nprtvxz) P^3 = (adgjmpsvybehknqtwzcfi1orux) P^4 = (aeimquyckgosw)(bfjnrvdzhplt1x) We do not show the powers of negative permutations (P) as we have already divided them on page 43, sufficient (in our opinion) to reverse the order of the letters in the cycles of permutation (P) and its positive powers to obtain negative powers. Having the above data, we can create the permutation (B): B1 = P^-1 * S^-1 * A1 * S * P = (ax)(bu)(ck)(dr)(ej)(fw)(gi)(lp)(ms)(nz)(oh)(qt)(vy) B2 = P^-2 * S^-1 * A2 * S * P^2 = (ar)(bv)(co)(dh)(f1)(gk)(iz)(jp)(mn)(qy)(su)(tw)(xe) B3 = P^-3 * S^-1 * A3 * S * P^3 = (as)(bz)(cp)(dq)(eo)(fw)(gj)(h1)(iy)(kr)(mu)(nt)(vx) B4 = P^-4 * S^-1 * A4 * S * P^4 = (ap)(bt)(cu)(dv)(e1)(gr)(ho)(jn)(ky)(1x)(mz)(qs)(tw) as well as the product of permutations (B1 B2), (B2 B3), and (B3 B4): B1 * B2 = (aepfytbsnikotd)(cgzmuwq1jxrh) B2 * B3 = (akjcevydz1wnu)(bxopgrsmtfhqi) B3 * B4 = (aq1oikgnwbcm)(dspuztfjryehx) The fact that all three product lengths are the same suggests that no transmission error has occurred within the first few keystrokes, and no deliberate errors are likely present in the middle part of the cipher. ----- And a simplification of the permutation theory: Imagine you have a secret way of reordering a set of things. In the document, these "things" are probably letters or numbers; the secret method is a permutation. A permutation is like a recipe that tells you how to shuffle them around. For example, if you have a list like 1-2-3-4, a simple permutation could be to switch the places of 1 and 4 and 2 and 3 to get a new list: 4-3-2-1. In the context of this document, the author talks about taking this secret recipe (which they refer to as S and treating it as known or public information) and combining it with other permutations labeled A1 to A4. They are looking at how to mix these permutations differently to get new permutations (labeled B1 to B4). The powers of P (like P^2, P^3, and P^4) are just ways of repeatedly applying the secret recipe. For instance, applying P twice (P^2) is like shuffling twice in a row. In the end, the author says that they've combined these permutations so that the length of the result is consistent across different combinations. These results suggest that the initial steps (the first few times they applied the secret recipe) were probably done correctly, and no mistakes appeared in the middle steps. In other words, "If you followed the cake recipe correctly at the start and your measurements were consistent each time you made it, it's likely that the cake will turn out well if you don't make any mistakes in the middle of the process." This is often important in cryptography, where the correct order of steps (and their reversals) is crucial for encoding and decoding secret messages.

NASA SP287 " WHAT MADE APOLLO A SUCCESS ??? " " of course , the way we got this job done was with meeting , big meetings , little meeting hundreds of meetings ! (( " the thing we always tried to do in these meetings was to encourage every one no matter how shy to speak out !!! " )) WHY encourage every one NO MATTER HOW SHY TO SPEAK SOMETHING OUT !!! IS ULTIMATE SECRET TO " MADE APOLLO A SUCCESS ??? " YOU CAN GO TO THE MOON WITH " DON'T SHY TO SPEAK SOMETHING OUT ??? "

There isn't many of us Elliott old commissioning engineers left that can fix this serial machine. Spare of Minilogs must be an issue.

What could they have done with the cheapest smartphone available today? AMAZING!

I'm guessing Frank O'Brien was consulted on this topic? He wrote a book called "The Apollo Guidance Computer." Having made contact with him, purely by email from the UK, I quite literally bumped into him at the "Cradle of Aviation Museum" on Long Island, twenty years ago - a million to one chance which I've never quite got over!

So Awesome! Well Done Video!!

Thanks for ZX and this interview

Quite an achievement to put together a PowerPoint display without even clearing the PowerPoint template ('Click to add ...'). The ultimate in 'hands off'.

16:05 i like when the camera switches to show the youtube comment section

Seriously???? They're wiring up a cipher machine and they do something in alphabetical order? That's honestly pretty pathetic.

"Marion Ryevski" WTF? His name was Marian Rejewski. How can you be so disrespectful?

45:39 That, my friend, is epic finger spinning!

BS NO BODY HAS BEEN TO THE MOON OR PAST THE VAN ALLEN RADIOACTIVE BELTS!

It was an absolutety amazing project!

I always wondered why Algol 60 was adopted as the answer to the IAL proposal, rather than Tony Brooker's Atlas Autocode, which was in all ways a superior language. Was AA's lack of adoption just from the community's lack of exposure to it, or did the Algol community actually evaluate AA and actively decide against it? Was it just the name - would it have been considered if it had been called Atlas Algol? It many ways it was just Algol but with the ridiculous parts such as call-by-name removed. The Algol world really lost its way when Algol 60 was replaced by Algol 68, whereas the developments of AA into Imp9 and later Imp77 kept the philosophy of AA intact but improved on it by adding only the minimal necessary features to make the language more general and more portable.

Also, in the movie The Imitation Game “Digital Computer” was mentioned, but who actually first used this terminology? The first known use of a digital computer is 1946

Were the Americans involved in any way with the Enigma code breaking?

*Did they ever get it to work again?*

"I used to wonder whether he was getting anything done!". The "outstanding mental feat of the century" lol.