The Polytechnic Museum has the Fund Collection “Electronic Digital Computing Machines”. This Fund Collection is the only one of such variety and size in Russia. There are more eight hundred objects and over two thousands documentary, printed, graphic items today. All four generations of electronic digital computing machines are presented in the Museum. The main part of the Fund Collection is the developments of domestic scientist. The Museum created thirteen personal funds of Russian scientists who devoted their activity to computer science. There are biographical and official documents, scientific manuscripts and publications, descriptions of inventions and certificates of authorship for them, pictures at work and pictures from the family albums in these personal funds.