It all begins with Konrad Zuse, arguably the very first computer hacker. He may not have been a hacker in the modern sense of the word, but none of it would have been possible without him. You see, Zuse made the world's very first fully programmable (Turing-complete as they say) computer, known as the Z3. It began, of course, as the Z1, and while it wasn't built in a cave with a box of scraps, Zuse did build it himself in his
parents' apartment, completing it in 1938. Zuse eventually gained some backing by the German government, leading to the evolution from the Z1 to the Z3, which, complete in 1941, is considered the mother of modern computing.