The world’s first digital computer

John Vincent Atanasoff, the inventor of the first digital computer in 1937, came from a Bulgarian family. He was an established American physicist, mathematician and electrical engineer who, together with Clifford Berry, created a model of an electronic digital computer with regenerative memory. The computer was based on multiple calculating modules and could perform logical operations with binary numbers.
Unfortunately, the United States’ entry into the Second World War interrupted their project, leaving the computer unfinished. The prototype was lost, but Atanasoff and Berry’s development is remembered as the Atanasoff–Berry Computer. Their efforts were abandoned because of wartime circumstances, but their work remains part of the history of computer science.