The Atanasoff – Berry Computer (ABC)   was the first electronic computer, designed and built by Lowa State College Mathematics and Physics professor John Vincent Atanasoff and his assistant, Clifford E. Berry ( a graduate student) . They worked in the basement of the physics building at Lowa State College on the computer from 1939 until 1942 when it was abandoned due to World War II . Unfortunately, after being abandoned , it was neglected and eventually disassembled for parts. In 1994, a team from Lowa state University began to rebuild the computer, finishing it in 1997. The system weighed more than seven hundred pounds (320 kg). It contained approximately 1-mile (1.6 km) of wire, 280 dual-triode vacuum tubes, 31  thyratrons , and was about the size of a desk.  The idea behind the ABC were later used in the construction of the ENIAC, the world’s first general purpose computer. Purpose / Working ABC was designed only to solve systems of  l...