Atanasoff – Berry Computer replica at 1st floor of Durham Center, Iowa State University

The Atanasoff – Berry Computer ( ABC ) was the first electronic digital computing device.

According to Atanasoff's account, several key principles of the Atanasoff – Berry Computer were conceived in a sudden insight after a long nighttime drive during the winter of 1937 – 38.

The ABC was built by Dr. Atanasoff and graduate student Clifford Berry in the basement of the physics building at Iowa State College during 1939 – 42.

The memory of the Atanasoff – Berry Computer was a pair of drums, each containing 1600 capacitors that rotated on a common shaft once per second.

Although the Atanasoff – Berry Computer was an important step up from earlier calculating machines, it was not able to run entirely automatically through an entire problem.

The case was legally resolved on October 19, 1973 when U. S. District Judge Earl R. Larson held the ENIAC patent invalid, ruling that the ENIAC derived many basic ideas from the Atanasoff – Berry Computer.

In 1997, a team of researchers led by John Gustafson from Ames Laboratory ( located on the Iowa State campus ) finished building a working replica of the Atanasoff – Berry Computer at a cost of $ 350, 000.

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* Atanasoff – Berry Computer, an early electronic digital computer

Machines such as the Z3, the Atanasoff – Berry Computer, the Colossus computers, and the ENIAC were built by hand using circuits containing relays or valves ( vacuum tubes ), and often used punched cards or punched paper tape for input and as the main ( non-volatile ) storage medium.

Atanasoff – Berry Computer replica at 1st floor of Durham Center, Iowa State University

In 1939, John Vincent Atanasoff and Clifford E. Berry of Iowa State University developed the Atanasoff – Berry Computer ( ABC ), The Atanasoff-Berry Computer was the world's first electronic digital computer.

* 1903 – John Vincent Atanasoff, American computer pioneer ( d. 1995 )

Atanasoff – Berry Computer replica at 1st floor of Durham Center, Iowa State University

* The Atanasoff-Berry computer is considered the first electronic digital computing device built by John Vincent Atanasoff and Clifford Berry at Iowa State University during 1937 – 1942.

* January 15 – John Vincent Atanasoff and Clifford E. Berry describe the workings of the Atanasoff – Berry Computer in print.

* October 4 – John Vincent Atanasoff, American computer engineer ( d. 1995 )

* The American Atanasoff – Berry Computer ( ABC ) ( shown working in summer 1941 ) was the first electronic computing device.

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For a variety of reasons ( including Mauchly's June 1941 examination of the Atanasoff – Berry Computer, prototyped in 1939 by John Atanasoff and Clifford Berry ), US patent 3, 120, 606 for ENIAC, granted in 1964, was voided by the 1973 decision of the landmark federal court case Honeywell v. Sperry Rand, putting the invention of the electronic digital computer in the public domain and providing legal recognition to Atanasoff as the inventor of the first electronic digital computer.

Atanasoff and Clifford Berry's computer work was not widely known until it was rediscovered in the 1960s, amidst conflicting claims about the first instance of an electronic computer.

At that time, the ENIAC was considered to be the first computer in the modern sense, but in 1973 a U. S. District Court invalidated the ENIAC patent and concluded that the ENIAC inventors had derived the subject matter of the electronic digital computer from Atanasoff ( see Patent dispute ).

Judge Larson explicitly stated, " Eckert and Mauchly did not themselves first invent the automatic electronic digital computer, but instead derived that subject matter from one Dr. John Vincent Atanasoff ".

Between 1954 and 1973, Atanasoff was a witness in the legal actions brought by various parties to invalidate electronic computing patents issued to John Mauchly and J. Presper Eckert, which were owned by computer manufacturer Sperry Rand.

In the 1973 decision of Honeywell v. Sperry Rand, a federal judge named Atanasoff the inventor of the electronic digital computer.

In that case's decision, Judge Earl R. Larson found that " Eckert and Mauchly did not themselves first invent the automatic electronic digital computer, but instead derived that subject matter from one Dr. John Vincent Atanasoff ".

In 1903, John Vincent Atanasoff, creator of the first digital electronic computer, was born in Hamilton.

* John V. Atanasoff with Clifford Berry successfully test the Atanasoff – Berry Computer, the first electronic digital computing device.

In 1988 he wrote a biography of John Vincent Atanasoff, the Iowa State College professor who invented the first electronic digital computer in 1939.

Atanasoff told Mauchly about his new digital device and invited him to see it.

Bulgaria's contribution to humanity continued throughout the nineteenth and twentieth centuries, with individuals such as John Atanasoff — a United States citizen of Bulgarian and British descent, regarded as the co-father of the digital computer.

The inventor of the digital computer, John Vincent Atanasoff, though born in Hamilton, New York, grew up in Brewster.

Mauchly visited Atanasoff multiple times in Washington during 1943 and discussed computing theories, but did not mention that he was working on a computer project himself until early 1944.

* Atanasoff Hall, a computer science building on the Iowa State campus

* The John Atanasoff Award, established by Georgi Parvanov in 2003 and bestowed annually by the President of Bulgaria to a young Bulgarian for achievements in the field of computer and information technologies and the information society of Bulgaria

The CYCLONE, was an early computer built in 1959 by John Vincent Atanasoff and his assistant Clifford Berry at Iowa State College ( now Iowa State University ), was based on the Institute for Advanced Study ( IAS ) architecture developed by John von Neumann.

In September 1942 Atanasoff left Iowa State for a wartime assignment as Chief of the Acoustic Division with the Naval Ordnance Laboratory ( NOL ) in Washington, D. C .; no patent application for the ABC was subsequently filed by Iowa State College.

After 1890 came philosopher Josiah Royce ( 1855 – 1916 ), botanist Liberty Hyde Bailey ( 1858 – 1954 ), the Southern Agrarians of the 1920s and 1930s, novelist John Steinbeck ( 1902 – 1968 ), historian A. Whitney Griswold ( 1906 – 1963 ), environmentalist Aldo Leopold ( 1887 – 1948 ), Ralph Borsodi ( 1886 – 1977 ), and present-day authors Wendell Berry ( b. 1934 ), Gene Logsdon ( b. 1932 ), Paul Thompson, and Allan C. Carlson ( b. 1949 ).

* 2012 – John Berry, English motorcycle racing promoter and manager ( b. 1944 )

* 1966 – Halle Berry, American model and actress

* 1975 – Bertrand Berry, American football player

* 1948 – Berry Berenson, American photographer, actress, and model ( d. 2001 )

* Arthur Berry, A Short History of Astronomy ( John Murray, 1898 – republished by Dover, 1961 ), 258-265.

Berinthia " Berry " Berenson Perkins ( April 14, 1948 – September 11, 2001 ) was an American photographer, actress, and model.

Bertrand Russell, the first to discuss the paradox in print, attributed it to G. G. Berry ( 1867 – 1928 ), a junior librarian at Oxford's Bodleian library, who had suggested the more limited paradox arising from the expression " the first undefinable ordinal ".