The world would be a different place if not for Alan Turing. A mathematician and cryptographer, Turing's work at Bletchley Park heavily contributed to the Allied war effort and had profound consequences in shortening World War II. His pioneering 'stored program' computer underpins every computer today, and he has influenced early thinking on artificial intelligence, came up with mathematical approaches to problems in biology and medicine, and played a part in designing and programming the early computers built in the post-war era.
Turing - who had been convicted of homosexuality, which was then a crime - is thought to have committed suicide in 1954. In 2012, the centenary of Alan Turing's birth, this guide celebrates the computing pioneer's life and looks at how his futuristic work, from artificial intelligence to thinking machines, is seen in a modern context.
You can read this free guide on any screen, from tablet to e-reader, desktop to mobile device -- or even print it out.