| slovo | definícia |
vannevar
(foldoc) | vannevar
/van'*-var/ A bogus technological prediction or a
foredoomed engineering concept, especially one that fails by
implicitly assuming that technologies develop linearly,
incrementally, and in isolation from one another when in fact
the learning curve tends to be highly nonlinear, revolutions
are common, and competition is the rule. The prototype was
Vannevar Bush's prediction of "electronic brains" the size of
the Empire State Building with a Niagara-Falls-equivalent
cooling system for their tubes and relays, a prediction made
at a time when the semiconductor effect had already been
demonstrated. Other famous vannevars have included
magnetic-bubble memory, LISP machines, videotex, and a
paper from the late 1970s that computed a purported ultimate
limit on areal density for integrated circuits that was in
fact less than the routine densities of 5 years later.
[Jargon File]
(2000-02-29)
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vannevar
(jargon) | vannevar
/van'@·var/, n.
A bogus technological prediction or a foredoomed engineering concept, esp.
one that fails by implicitly assuming that technologies develop linearly,
incrementally, and in isolation from one another when in fact the learning
curve tends to be highly nonlinear, revolutions are common, and competition
is the rule. The prototype was Vannevar Bush's prediction of ‘electronic
brains’ the size of the Empire State Building with a
Niagara-Falls-equivalent cooling system for their tubes and relays, a
prediction made at a time when the semiconductor effect had already been
demonstrated. Other famous vannevars have included magnetic-bubble memory,
LISP machines, videotex, and a paper from the late 1970s that computed a
purported ultimate limit on areal density for ICs that was in fact less
than the routine densities of 5 years later.
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| | podobné slovo | definícia |
vannevar bush
(wn) | Vannevar Bush
n 1: United States electrical engineer who designed an early
analogue computer and who led the scientific program of the
United States during World War II (1890-1974) [syn: Bush,
Vannevar Bush] |
bush, vannevar
(foldoc) | Vannevar Bush
Bush, Vannevar
Dr. Vannevar Bush, 1890-1974. The man who invented
hypertext, which he called memex, in the 1930s.
Bush did his undergraduate work at Tufts College, where he
later taught. His masters thesis (1913) included the
invention of the Profile Tracer, used in surveying work to
measure distances over uneven ground. In 1919, he joined
MIT's Department of Electrical Engineering, where he stayed
for twenty-five years. In 1932, he was appointed
vice-president and dean. At this time, Bush worked on optical
and photocomposition devices, as well as a machine for rapid
selection from banks of microfilm.
Further positions followed: president of the Carnegie
Institute in Washington, DC (1939); chair of National Advisory
Committee for Aeronautics (1939); director of Office of
Scientific Research and Development. This last role was as
presidential science advisor, which made him personally
responsible for the 6,000 scientists involved in the war
effort. During World War II, Bush worked on radar antenna
profiles and the calculation of artillery firing tables. He
proposed the development of an analogue computer, which
later became the Rockefeller Differential Analyser.
Bush is the pivotal figure in hypertext research. His
ground-breaking 1945 paper, "As We May Think," speculated on
how a machine might be created to assist human reasoning, and
introduced the idea of an easily accessible, individually
configurable storehouse of knowledge. This machine, which he
dubbed "memex," in various ways anticipated hypermedia and
the World Wide Web by nearly half a century.
{Electronic Labyrinth article
(http://jefferson.village.virginia.edu/elab/hfl0034.html)}.
{Bush's famous article, "As We May Think"
(http://theatlantic.com/unbound/flashbks/computer/bushf.htm)}.
(2001-06-17)
|
vannevar bush
(foldoc) | Vannevar Bush
Bush, Vannevar
Dr. Vannevar Bush, 1890-1974. The man who invented
hypertext, which he called memex, in the 1930s.
Bush did his undergraduate work at Tufts College, where he
later taught. His masters thesis (1913) included the
invention of the Profile Tracer, used in surveying work to
measure distances over uneven ground. In 1919, he joined
MIT's Department of Electrical Engineering, where he stayed
for twenty-five years. In 1932, he was appointed
vice-president and dean. At this time, Bush worked on optical
and photocomposition devices, as well as a machine for rapid
selection from banks of microfilm.
Further positions followed: president of the Carnegie
Institute in Washington, DC (1939); chair of National Advisory
Committee for Aeronautics (1939); director of Office of
Scientific Research and Development. This last role was as
presidential science advisor, which made him personally
responsible for the 6,000 scientists involved in the war
effort. During World War II, Bush worked on radar antenna
profiles and the calculation of artillery firing tables. He
proposed the development of an analogue computer, which
later became the Rockefeller Differential Analyser.
Bush is the pivotal figure in hypertext research. His
ground-breaking 1945 paper, "As We May Think," speculated on
how a machine might be created to assist human reasoning, and
introduced the idea of an easily accessible, individually
configurable storehouse of knowledge. This machine, which he
dubbed "memex," in various ways anticipated hypermedia and
the World Wide Web by nearly half a century.
{Electronic Labyrinth article
(http://jefferson.village.virginia.edu/elab/hfl0034.html)}.
{Bush's famous article, "As We May Think"
(http://theatlantic.com/unbound/flashbks/computer/bushf.htm)}.
(2001-06-17)
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