Man of the Century. (Score 1)

If you want someone who was instrumental to computing consider the following. How about John von Neumann. He was instrumental in the success of Eniac and he created the idea of a bit and to sequential instructions, which made the modern computer possible. Or how about Dennis Ritchie. He was instrumental in the creation of UNIX and created the C programming language, which in one way or another affect everyone using a computer.