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Dr. John Vincent Atanasoff is the co-inventor of first digital computer, named the Atanasoff-Berry Computer, or ABC for short, which was invented and built at Iowa State College (now University) between 1939 and 1942.

The ABC is most noteworthy for the patent dispute which established it as the first digital computer and Atanasoff as it's inventor.

A working replica of the ABC is on display at the Computer History Museum in San Jose, California and the last remaining piece of the original ABC is on display in the Durham Center at Iowa State University.

The image on this page depicts a sculpture in Sofia, Bulgaria celebrating John Atanasoff and the invention of the digital computer. Image by Matti Blume [CC BY-SA 4.0], via Wikimedia Commons.