 Atanasoff–Berry computer

The Atanasoff-Berry Computer (ABC) is considered one of the early electronic computers and was developed by American physicist John Atanasoff and his graduate student, Cliff Berry, at Iowa State College (now Iowa State University) between 1937 and 1942. The ABC was groundbreaking in several ways: 1. **Binary System**: The ABC utilized a binary number system for calculations, which was a shift away from the decimal system used in many previous computing devices.