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John Vincent Atanasoff

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John Vincent Atanasoff

John Vincent Atanasoff was an American physicist and inventor whose father came from Bulgaria. In the 1930s at Iowa State College he built the machine now called the Atanasoff–Berry Computer, and a US court ruling of 1973 named him the inventor of the electronic digital computer.

Aktualisiert Oktober 2026 · Fakten geprüft 13. Oktober 2026

Foto: Eye Steel Film from Canada, CC BY 2.0, über Wikimedia Commons

Atanasoff’s lifespan
1903–19951
Atanasoff’s lifespan
Year the ABC was prototyped
19391
Year the ABC was prototyped
Year of the Honeywell v. Sperry Rand ruling
19731
Year of the Honeywell v. Sperry Rand ruling

John Vincent Atanasoff

At a glance

At a glance
Born 4. Oktober 1903, Hamilton, New York, United States
Died 15. Juni 1995, Frederick, Maryland, United States
Known for Atanasoff–Berry Computer
Education University of Florida; Iowa State College; University of Wisconsin–Madison
Award United States National Medal of Technology, 1990

Quelle: Wikipedia: John Vincent Atanasoff1

Early life and computer

Atanasoff was born in Hamilton, New York, in 1903 and was raised in Brewster, Florida. His father, Ivan Atanasov, was an electrical engineer of Bulgarian origin, born in Boyadzhik. His mother, Iva Lucena Purdy, taught mathematics. Atanasoff earned a degree in electrical engineering from the University of Florida in 1925, a master’s degree in mathematics at Iowa State College in 1926, and a doctorate in theoretical physics from the University of Wisconsin–Madison in 1930.1

At Iowa State, Atanasoff looked for faster ways to carry out calculations. With a grant of $650 and the help of graduate student Clifford Berry, he prototyped the Atanasoff–Berry Computer in 1939. The special-purpose electronic device used vacuum tubes, binary mathematics and Boolean logic. It was designed to solve up to 29 simultaneous linear equations and used regenerative capacitor memory. It did not have a central processing unit.1

Patent dispute

Atanasoff met John Mauchly in 1940 and invited him to see the ABC. Mauchly visited Atanasoff in Iowa in 1941, where they discussed the prototype and reviewed Atanasoff’s design manuscript. Atanasoff left Iowa State that year for wartime work at the Naval Ordnance Laboratory. Iowa State did not file a patent application for the ABC.1

In 1973, a federal judge ruled in Honeywell v. Sperry Rand that Eckert and Mauchly had derived the subject matter of the automatic electronic digital computer from Atanasoff. The decision named Atanasoff as its inventor. The ruling resolved challenges to his claim that had arisen in legal actions concerning electronic computing patents.1

Later life and legacy

After the Second World War, Atanasoff worked for the government on specialised seismographs and microbarographs for detecting distant explosions. He founded Ordnance Engineering Corporation in 1952 and sold it in 1956. He later led Cybernetics Incorporated, a company he started in Frederick, Maryland, in 1961. Atanasoff died at his home in 1995, aged 91.1

Atanasoff received Bulgaria’s Order of Saints Cyril and Methodius, First Class, in 1970. In 1990, United States President George H. W. Bush awarded him the National Medal of Technology. His name was given to the asteroid 3546 Atanasoff, and Bulgaria awards an annual John Atanasoff prize.1

Quellen

  1. Wikipedia: John Vincent Atanasoff

Fakten geprüft 13. Oktober 2026. Von InvestBulgaria zur allgemeinen Information erstellt.

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