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John Vincent Atanasoff (October 4, 1903 – June 15, 1995) was an American physicist. The 1973 decision of the patent suit Honeywell v. Sperry Rand named him the inventor of the first automatic electronic digital computer, a special-purpose machine that has come to be called the Atanasoff–Berry Computer.
The son of a Bulgarian immigrant who became an electrical engineer, Atanasoff held positions as a teaching professor, a governmental wartime research director, and a corporate research executive before being recognized in the 1970s and 1980s for digital electronic computer research he conducted at Iowa State College in the late 1930s and early 1940s.
Assen Jordanoff, Asen Hristov Yordanov, "Jerry" (Bulgarian: Àñåí Õðèñòîâ Éîðäàíîâ) born September 2, 1896, Sofia, Bulgaria – d. October 19, 1967, White Plains, New York).
Jordanoff was a Bulgarian and American inventor, engineer, and aviator. Jordanoff is considered to be the founder of aeronautical engineering in Bulgaria, as well as a contributor to the development of aviation in America.