John Vincent Atanasoff (Bulgarian: Джон Винсент Атанасов) (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.

John Atanasoff was born in Hamilton, New York to an electrical engineer and a school teacher. Atanasoff's father, Ivan Atanasoff, was born in 1876 in the village of Boyadzhik, Ottoman Empire (present-day Bulgaria), just before Ivan's own parents died in the April Uprising. In 1889, Ivan
Atanasoff emigrated to the United States with his uncle. John Vincent Atanasoff's mother, Iva Lucena Purdy, was a teacher of mathematics.
Atanasoff was raised by his parents in Brewster, Florida. At the age of nine he learned to use a slide rule, followed shortly by the study of logarithms, and subsequently completed high school at Mulberry High School in two years. In 1925, Atanasoff received his bachelor of science degree in electrical engineering from the University of Florida, graduating with straight A's.
He continued his education at Iowa State College and in 1926 earned a master's degree in mathematics. He completed his formal education in 1930 by earning a Ph.D. in theoretical physics from the University of Wisconsin-Madison with his thesis, The Dielectric Constant of Helium. Upon completion of his doctorate, Atanasoff accepted an assistant professorship at Iowa State College in mathematics and physics.
John Atanasoff completed his high school course in two years, with excellence in both science and mathematics. He had decided to become a theoretical physicist, and with that goal in mind, entered the University of Florida in Gainesville in 1921. Because the university curriculum did not offer degrees in physics, John began his undergraduate studies in the electrical engineering program. The knowledge of electronics and higher math that John acquired as an electrical engineering student would later prove fortuitous in helping to transform the theory of the computer into a working reality.
John Atanasoff graduated from the University of Florida in Gainesville in 1925, with a Bachelor of Science degree in electrical engineering. He received his Master's degree in mathematics from the Iowa State College in Ames, Iowa in 1926. After completing his graduate studies, Atanasoff accepted a position teaching physics and mathematics at Iowa State College. He was then accepted into the doctoral program at the University of Wisconsin, and received his doctoral degree (Ph. D.) in theoretical physics from Wisconsin in 1930. In his doctoral thesis, "The Dielectric Constant of Helium", Atanasoff was required to do many complicated and time consuming computations. Although he utilized the Monroe mechanical calculator, one of the best machines of the time, to assist in his tedious computations, the shortcomings of this machine were painfully obvious and motivated him to think about the possibility of developing a more sophisticated calculating machine. After receiving his Ph. D. in theoretical physics in July 1930, John returned to the staff of Iowa State College and began his work on developing a better and faster computing machine. (More...)
In 1970 John Atanasoff was invited to Bulgaria by the Bulgarian Academy of Sciences, and the Bulgarian Government conferred to him the Cyrille and Methodius Order of Merit First Class. This was his first public recognition, and it was awarded to him three years before similar honors were conferred to him in the United States. The credit for this timely recognition of Atanasoff's achievement should be given to the Bulgarian academicians, Blaghovest Sendov, Ph.D. and Kyrille Boyannov, Ph.D., among others. During his lifetime, the highest honor and recognition awarded to John Vincent Atanasoff, the Father of the Computer, was the National Medal of Science and Technology, conferred to him by George H. W. Bush in 1990. Following World War II Atanasoff remained with the government and developed specialized seismographs and microbarographs for long-range explosive detection. In 1952 he founded and led the Ordnance Engineering Corporation, selling the company to Aerojet General Corporation in 1956 and becoming Aerojet's Atlantic Division president. In 1960 Atanasoff and his wife Alice moved to their hilltop farm in New Market, Maryland for their retirement. In 1961 he started another company, Cybernetics Incorporated, in Frederick, Maryland which he operated for 20 years. He was gradually drawn into the legal disputes being contested by the fast growing computer companies Honeywell and Sperry Rand. Following the resolution of Honeywell v. Sperry Rand, which named Atanasoff the inventor of the automatic electronic digital computer, Atanasoff was warmly honored by Iowa State College, which had since become Iowa State University, and more awards followed. Atanasoff died in 1995 of a stroke at his home after a lengthy illness. He is buried in Pine Grove Cemetery in Mount Airy, Maryland. http://atanasoff.pmg...com/homeEN.html