The magnetic tape is the oldest memory media for computers, still in use today. Developed in Germany in 1928 but not used until 1951 in the Mauchly-Eckert UNIVAC I computer.
In 1930 the AEG (Allgemeine Elektrizitatsgesellschaft) company in Berlin decided to develop the Magnetophone machine, based on the Pfleumer principle, and in 1932, Pfleumer granted the right of use to the AEG that based on his invention.