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Today we're marking the birth of a someone who is a hero to many of us at Google. Alan Turing was born 100 years ago into a world very different from our own—but he’s a founding father of every computer and Internet company today. In 1936, his paper “On Computable Numbers”  introduced two key concepts, “algorithms” and “computing machines," which now rank among the most important intellectual breakthroughs of the 20th century.

In the evolution of computing, all paths trace back to Turing—so we're proud to help commemorate and preserve his legacy. In 2010 we helped raise funds to preserve Turing's papers at Bletchley Park, and recently we’ve worked with curators at London’s Science Museum on their new exhibition “Codebreaker - Alan Turing’s Life and Legacy.” And of course, we couldn't let this occasion pass without a doodle. If you visit our homepage today, you'll find a simulation of his “Turing machine"—try your hand at programming it, and read more about Turing in our blog post: http://goo.gl/ByYbV
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187 comments
 
I Tried This The Moment I Opened Google! :P
Uyen Vu
 
Think about him like a your (Google) Hero! What a great Man.
 
He is close to Jesus' story. Great man, saved many people, establishment scared of him, died at the hand of the same establishment, lives on in people. #pardonalantouring  
 
This one (almost) tops the Pac-Man doodle as my favorite. It's really great.
 
 struggle for the turing the conquest of Istanbul that ignores condemn google...
 
Turkish jibber jabber blech baklava Mahir
 
谷歌人类的希望!但是要想办法打到GFW啊!
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Solved it ! It was damn fun ! :D
 
And oh so sadly this man lived in a world of incredible intolerance, being homosexual was his unforgiveable crime and almost certainly because of this he chose to end his own life ...
 
I also served WW11 as BP codebreaker, breaking Rommel's cypher messages in Western Desert for Gen. Montgomery, then India/Burma Jap messages; yet my messages now 9at 98) to my MPs are refused by Google as Spam; I am a lifelong Conservative and resent your interference with my passing info to my MPs for information. Turing would have agreed with me on exposing info. Harry Beckhough MBE
 
google,The hope of mankind!
 
+Google , did you make the T.M. in the doodle have an infinite tape? ;-)
 
Not now thank goodness in the UK, but there was a time when it seemingly was, as it was a prisonable offence!
 
I was also a Codebreaker at Bletchley in WW11 with Alan and others, but flown to Egypt, India and Burma to break Rommel's cyphers and Jap until war-end..never to be forgotten even at 98 Harry beckhough
 
How to see THIS Doodle (with the programming game)?  

What I saw was just the 'word' completed......  
No SWitchboard whatsoever......
 
I just got a history lesson. Fun stuff
 
How do I load the Turing Doodle in Poland? Even google.com shows me the silly Father's day doodle instead. At least a link would be appreciated.

It's annoying that the local Doodle is overriding the global one at google.com.
 
I have studied a lot turing test and turing machine in my Computer Application subject.. it was too complected but very interesting...
Thanks Alan Turin Sir.  #alanturing  
 
It was really awesome.. I played second time, and to my pleasant surprise there was another level... Cracking the last e was real brain twister
 
Did you know that he was sentenced to estrogen therapy because he was gay and being gay in England at the time was against the law?
 
awesome doodle, but wasn't that hard to solve
 
Why Google forgot birthday of Great leader Benazir Bhutto on 21st June, Gandhi, Qaud Azam and King Faisal. google must appreciate political martyrs.
 
Thanks, but neither classic home nor /ncr helped. I still get the Polish doodle :(
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yeah! finished the doodle! Funny machine, the turing machine. It reminds me of forth programming in a way in that it's different from the von neumann architecture and operations perform sequentially on a stack (tape).
 
I think this ranks up there with one of your best interactive doodles to date.
 
Fantastic doodle! Thanks +Google!
Thanks Alan Turing for your contribution to computer science!
 
Ha-ha, on the third one I made a loop.. looks like Google put some anti-"unendable" loops stuff. It went on for some time, then it moved in "fast forward' and then the doodle went on to checking.
 
great..finished the binary "mystery" ...thanks Alan Turing~
 
Un appuntamento imperdibile, per i veri puristi informatici... ah quanto dolor a sentir parlar di MdT
 
I made a Turing Machine Simulator for my bachelors compsci project…good times…amazing how such a simple concept expands even to our largest supercomputers today.
 
I read books about his tragic life and how genius. I wonder if he would live more long time, he could create more splendid thing.
 
I wish more levels and make the application on Andriod. It's really great doodle. Thank you
 
When you turn on the doodle again difficult to get another set of turns, but there are only two sets.
Fei Fei
 
a masterpiece
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A very special occasion. Thanks much for the celebration!
 
Wow, es una de las personas del manana que con sus aportes construyen nuestro futuros gracias Alan Turing!!
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good idea by google, i think this "game"
 
Interesting... I will look for "On Computable Numbers" book to see.
Duo Xu
 
Awesome work :)
 
I learn something new everyday! I had no clue who this guy was until today.
I wonder what else he would have come up with had he lived?
 
I tried it. It wasn't confusing at all! I got the right answers!
 
very importand advance to know algorithmics, and computational mathematics
 
i played this when i opened up my google chrome today! really interesting!
 
So for the turing machine, is a close equivalent the von neuman CPU. E.g. the cpu continuously runs and is continuously fed instructions?
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The only one I had trouble with the last one but got it. Nice. 
 
i hate every thing about compilers :(
 
Had fun doing the little puzzles to try and get the "GOOGLE" to light up. Needs to be slightly more difficult though.
 
loving this era of "agorithms" and PC machines intellectual of me.
 
Completed the Doodle & i'm glad I was born in the 90's so I can enjoy all this internet new age & technology. In 10 years we have improved more than the last 100 years in 20th century. That's impressive.
 
Played on this and thought it was awesome!
 
Another very cool and interesting nod, made me want to learn something!
 
Nunca supe como funcionaba
 
Gahh I missed it. Does anyone know how to access it after it's finished?
 
Smart idea how to motivate yourself to get know about something interesting. Thank you +Google 
 
That sounds good I hope superman is on there 
 
Come on Google! Today is the 40th Anniversary of Title IX. Math is important, yeah, but so are the opportunities for women's participation in sports as a result of Title IX!
 
Learning something new everyday, i love life.
 
No real trouble until the 'e'.  Thanks for a great doodle!
 
Solve the puzzle, get a job offer at Google?
 
Why do I get only the static image!!! I'm so frustrated - I have already tried links and suggestions above.... it looks really cool, and I just want to try it.
 
Found it! I got it by updating Firefox to most recent version (for those if you who have the same problem, static image only).

Now a comment: the point is not to "beat" it, is not meant to be a competition or a particularly difficult game - is just a clever way to honor a great mind born 100 years ago, one of those who changed the way we live today.
 
Just awesome, nothing more to say
 
argh! It's gone and I didn't get to play with it
 
+Yash Pradhan Was it necessary to include the first comment? Littering social networking sights.
 
Tribute to a great Computer scientist and mathematician.. :)
 
yes a great man who make the way for AI(Artificial Intelligence)
 
Alan Turing............take birth once again plz....
 
Alan Turing and his work with Von Neumann are undoubtedly the most important of the 20th century. It was a follow on from Babages Difference Engine 100 years earlier but the important step was Ada Lovelace's invention of Computer Programming using punch cards.
 
that game or watever it is is CCCCCRRRRAAAAZZZZYYYYY
i tryed playing it and idk how 2.
??????????
 
I want to play with this more...how can I do it?
 
I knew how to do that pattern thingy. Puzzle books are great. Lets see if anyone can figure this out (sorry its long):

01010010 01101111 01110011 01100101 01110011 00100000 01100001 01110010 01100101 00100000 01110010 01100101 01100100 00101100 00001010 01110110 01101001 01101111 01101100 01100101 01110100 01110011 00100000 01100001 01110010 01100101 00100000 01100010 01101100 01110101 01100101 00101100 00001010 01111001 01101111 01110101 00100000 01100110 01101001 01100111 01110101 01110010 01100101 01100100 00100000 01101111 01110101 01110100 00100000 01101101 01111001 00100000 01110000 01110101 01111010 01111010 01101100 01100101 00101100 00001010 01110011 01101111 00100000 01101011 01110101 01100100 01101111 01110011 00100000 01110100 01101111 00100000 01111001 01101111 01110101 00100001
 
I've had trouble with that in Google Doodle and I got distracted once when I was searching for something and I couldn't remember because of that doodle.
Ali ZK
 
is it a game?
 
hmmm. . .I no understand, !?
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