mercury memory

mercury memory

[′mər·kyə·rē ′mem·rē]

delay line memory

A memory technology in some of the earliest computers that used an acoustic delay line. For example, in the 1940s and 1950s, the memory in the EDVAC, EDSAC and UNIVAC I was made of tubes of liquid mercury that were several feet long. Electrical pulses were converted to sound and back to electrical in a continuous loop.

Sound Travels Slower than Electricity
At one end of the tube, a transducer converted the electrical pulses to sound, which propagated through the mercury to the other end. At that point, another transducer converted the sound to electricity and sent it back to the beginning. The conversion to sound, which propagates slower than electricity, caused the device to function as storage. See delay line, EDVAC, EDSAC, UNIVAC I and early memory.

References in periodicals archive ?
20 -- Mercury, the house of the widest range of PC components, announced a 3-Year warranty for their Mercury Memory Modules effective 1st Jan, 2011.
Mercury Memory Modules are available in selected cities through Kobian's authorised partners & Kobian plans to appoint new partners to cover the entire country.
Her play, Mercury Memory, will be shown at the Flat Lake Festival in Co.