IEEE Spectrum July, 2007 - 13
Core Memories
One of the great achievements of the UNIVAC
1, the world's first commercial computer, was
its mercury delay-line memory, shown here.
As J. Presper Eckert, co-inventor of the UNIVAC,
and four other members of the Institute of Radio
Engineers wrote in 1949: "In a delay-line memory,
information is stored in the form of groups of
electrical or acoustical impulses or signals
circulating in an electric delay line or medium
suitable for transmission of acoustic waves."
The authors noted, "Although considerable
research is being done on electrostatic memories...
the delay-line type of memory is more highly
developed at the present time." Of course, today
essentially all memory is electrostatic.
The UNIVAC is just one of dozens of
computers and computing devices lovingly
brought back to life in the pages of Core
Memory: A Visual Survey of Vintage Computers,
a stunning coffee-table tome by Mark Richards
( photographs) and John Alderman (text),
recently published by Chronicle Books,
San Francisco. For more photos from the book,
see http://spectrum.ieee.org/jul07/coreslides.
Photo by Mark Richards
www.spectrum.ieee.org
July 2007 | IEEE Spectrum | NA 25
http://spectrum.ieee.org/jul07/coreslides
http://www.spectrum.ieee.org
Table of Contents for the Digital Edition of IEEE Spectrum July, 2007
IEEE Spectrum July, 2007 - Cover1
IEEE Spectrum July, 2007 - Cover2
IEEE Spectrum July, 2007 - 1
IEEE Spectrum July, 2007 - 2
IEEE Spectrum July, 2007 - 3
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IEEE Spectrum July, 2007 - 26
IEEE Spectrum July, 2007 - 27
IEEE Spectrum July, 2007 - 28
IEEE Spectrum July, 2007 - 29
IEEE Spectrum July, 2007 - 30
IEEE Spectrum July, 2007 - 31
IEEE Spectrum July, 2007 - 32
IEEE Spectrum July, 2007 - 33
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IEEE Spectrum July, 2007 - 35
IEEE Spectrum July, 2007 - 36
IEEE Spectrum July, 2007 - 37
IEEE Spectrum July, 2007 - 38
IEEE Spectrum July, 2007 - 39
IEEE Spectrum July, 2007 - 40
IEEE Spectrum July, 2007 - 41
IEEE Spectrum July, 2007 - 42
IEEE Spectrum July, 2007 - 43
IEEE Spectrum July, 2007 - 44
IEEE Spectrum July, 2007 - 45
IEEE Spectrum July, 2007 - Cover3
IEEE Spectrum July, 2007 - Cover4
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