A: Do you know the face of Britain's new 50-pound bank note will be changed?
B: Really? What ? who will be on the face?
A: Alan Turing.
B: Who is Alan Turing?
A: Alan Touring was a founding father of computer science and artificial intelligence(AD). It's known that the bank received 227, 299 nominations(提名) for 989 different scientists during a six-week nomination period, the dead well-known physicist, Stephen Hawking.
B: Why is Turing? Could you tell me more about him?
A: Turing was born in London, in 1912. As a , he already showed his outstanding mathematical and scientific understanding. At the age of 15, he had mastered Einstein's theory. In 1931, he King's college, Cambridge where his mathematical ability had been fully developed. He won the famous British Smith prize in mathematical and the youngest researcher in King's College. From 1936 to 1938, he went, to America to study in Princeton Institute for Advanced Study(普林斯顿高级研究院). In 1937, his paper came out introducing an idea that came to be known as the Turing machine, which is to have formed the basis of modern computing.
B: What is the machine used for?
A: It was a hypothetical device (假设性设备) that could come up with the to any problem that is computable. Turing is best known for his work at Bletchley Park, where UK cryptologists sought to decipher(密码专家寻求破译) messages sent by the Nazis. During the war, he developed the device to help break German messages.
B: He was really great. But why do few people know him?
A: His efforts to crack Germany's Enigma code (破解德国恩尼格玛密码) a secret for more than half a century. But he had saved thousands of lives and speeded up the end of the war.
B: There is no that we should remember him forever. I think no one will disagree with the bank of the UK.
A: That's not all. He was also a in the field of artificial intelligence: one of his best known achievements in this field is the Turing test, which is used to measure whether a machine is "intelligent".
B: When is the note expected to use?
A: By the end of 2021.
