John W. Mauchly was an American physicist and computer scientist, best known for his role in developing the first general-purpose electronic computer, the ENIAC. Born on August 30, 1907, he contributed significantly to the field of computing during the mid-20th century. Mauchly co-founded the Eckert-Mauchly Computer Corporation with J. Presper Eckert, where they worked on several pioneering projects, including the UNIVAC I, the first commercially available computer. His innovations laid the groundwork for modern computing technology and have had a lasting impact on the industry.