High Quality Content by WIKIPEDIA articles! The project to build the Automatic Computer M-1 was completed in December 1951 at the Energetics Institute of the USSR Academy of Sciences. In charge of the Laboratory of Electrosystems was I.S. Brouk, who obtained the first domestic patent with the title "Digital Computer with Common Bus" in 1948. Work to build the computer based on Brouk's design began in 1950. Parts were very difficult to get due to postwar rationing. On the other hand, due to availability of copper oxide diods which were brought as trophy from Germany the machine had the fewest lamp count of contemporary designs, at 730. The memory was based on an original invention of an electrostatic memory using the ordinary oscilloscope cathod ray tube. Each tube was capable of holding 32 words, 25 bit each. The computer had 8 such tubes for a total fast memory of 256 machine words.