Von Neumann architecture
By 1951 the Ferranti Mark I was marketed in the UK as a commercial computer using Williams tube technology, followed by the UNIVAC I using delay line memory in the US. These memory technologies allowed stored-program features to be more practical. The stored-program concept had been first widely published in 1945 in the "First Draft of a Report on the EDVAC" and became known as the Von Neumann architecture. The EDVAC (first working in 1949) was the ENIAC successor, designed by the team who then marketed the UNIVAC.