The Atanasoff-Berry Computer (ABC) was an early electronic computer developed in the late 1930s by John Atanasoff and Clifford Berry at Iowa State College. It was designed to solve systems of linear equations and is considered one of the first electronic computers, using vacuum tubes for computation. The ABC introduced several key concepts in computing, such as binary representation and electronic switching. Although it was never fully operational, its design influenced later computers, including the ENIAC, which was built in the 1940s. The ABC laid the groundwork for future advancements in computer technology.