1100/10 (maybe called 1110?) used plated wire. Other Univac models used various memory technologies, going with the technology of the times. Engineering Researc

1100/10 (maybe called 1110?) used plated wire. Other Univac models used various memory technologies, going with the technology of the times. Engineering Research Associates built a machine with Mercury acoustic delay lines, and a 1 bit serial ALU. ERA and Echart-Mauchly merged to form Univac, I believe. One of my profs worked on the ERA machine with delay line memory. Later he got into magnetic storage, and his PhD students went on to do a lot of important work in core and later magnetic bubble memory.