Modern · Britain
Alan Turing
1912-1954
Their story
Why Alan Turing matters
Turing described a general model of computation and helped develop machines and methods for codebreaking.
Alan Turing worked in Britain during the Modern era. Science was becoming a team effort carried out in universities, hospitals, observatories, industry and large research laboratories.
Working in computing and mathematics, Alan Turing looked for structures that could be expressed clearly and used again. Turning a difficult idea into an organised method allowed later learners and researchers to build from the same starting point.
Key discovery or invention
Foundations of computer science and wartime codebreaking.
Alan Turing's central contribution was foundations of computer science and wartime codebreaking.
The important advance was not simply one answer. It was a logical structure, calculation or procedure that other people could follow step by step, check for themselves and reuse on new problems.
Why it still matters: Modern mathematics, software and data systems still depend on clear definitions, repeatable procedures and logical proof. Alan Turing's work is one chapter in that continuing story rather than the final word.
He also studied how patterns such as animal spots can form through chemical reactions.