Historical Marker
Julien Dubuque
Historical marker location:
Dubuque, Iowa
( Marker can be reached from Monument Drive, 0.4 miles east of Mines of Spain Road.)
The first electronic digital computer was built at Iowa State University in the 1930s. The machine, called the Atanasoff-Berry Computer, was invented by John Atanasoff and his graduate student, Clifford Berry.