John von Neumann, a Hungarian-American mathematician and computer scientist, played a crucial role in the development of the electronic digital computer.

His groundbreaking work on the architecture of modern computers, including the concept of stored-program computers, influenced the design of most computers today.

He also contributed to fields such as game theory, quantum mechanics, and operations research, making him one of the most famous computer scientists in history.

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The electronic digital computer visionary 1903-1957