mercury delay line

from The Free On-line Dictionary of Computing (8 July 2008)

mercury delay line

   <storage, history> An archaic {first-in first-out} fixed time
   period data storage device using {acoustic transducers} to
   transmit data as waves in a trough or tube of mercury.

   EDSAC (Cambridge) and UNIVAC I used delay lines.

   (2002-06-12)