| slovo | definícia |
20
(gcide) | 20 \20\ adj.
1. one more than nineteen; denoting a quantity consisting of
twenty items or units; -- representing the number twenty
as Arabic numerals
Syn: twenty, xx, score
[WordNet 1.5 +PJC] |
20
(wn) | 20
adj 1: denoting a quantity consisting of 20 items or units [syn:
twenty, 20, xx]
n 1: the cardinal number that is the sum of nineteen and one
[syn: twenty, 20, XX] |
| | podobné slovo | definícia |
20th
(encz) | 20th,dvacátý num: Zdeněk Brož |
amount to czk 20
(encz) | amount to CZK 20,000,dosahovat výše 20 000 Kč Mgr. Dita Gálová |
global 2000 report to the president
(encz) | Global 2000 Report to the President,Global 2000 Report to the
President [eko.] RNDr. Pavel Piskač |
americký spisovatel 20. stol.
(czen) | americký spisovatel 20. stol.,Salinger, J. D. Martin Dvořák |
dosahovat výše 20 000 kč
(czen) | dosahovat výše 20 000 Kč,amount to CZK 20,000 Mgr. Dita Gálová |
délková míra - 201 m
(czen) | délková míra - 201 m,furlong Zdeněk Brož |
funkční i po roce 2000
(czen) | funkční i po roce 2000,Y2K compliantn: Milan Svoboda |
global 2000 report to the president
(czen) | Global 2000 Report to the President,Global 2000 Report to the
President[eko.] RNDr. Pavel Piskač |
hlučná 20. léta
(czen) | hlučná 20. léta,Roaring Twentiesn: [id.] desetiletí po 1. světové válce
1920-1929 Michal Ambrož |
opakující se po 20 letech
(czen) | opakující se po 20 letech,vicennial Zdeněk Brož |
robert edwin peary (1856-1920)
(czen) | Robert Edwin Peary (1856-1920),Pearyn: [jmén.] americký polárník,
považován za prvního člověka, který dosáhl severního pólu Petr Prášek |
rok 2000
(czen) | rok 2000,Y2K[zkr.] |
20-20 hindsight
(gcide) | hindsight \hindsight\ n.
understanding the nature of an event after it has happened;
as, hindsight is always clearer than foresight.
[WordNet 1.5]
20-20 hindsight, twenty-twenty hindsight Perfect
understanding of an event after it has happened; -- a term
usually used with sarcasm in response to criticism of
one's decision, implying that the critic is unfairly
judging the wisdom of the decision in light of information
that was not available when the decision was made.
[PJC] |
20th
(gcide) | 20th \20th\ adj.
1. coming next after the nineteenth in a series
Syn: twentieth
[WordNet 1.5] |
C10H20
(gcide) | Decene \De"cene\, n. [L. decem ten.] (Chem.)
One of the higher hydrocarbons, C10H20, of the ethylene
series.
[1913 Webster]Diamylene \Di*am"y*lene\, n. [Pref. di- + amylene.] (Chem.)
A liquid hydrocarbon, C10H20, of the ethylene series,
regarded as a polymeric form of amylene.
[1913 Webster] |
C10H20O
(gcide) | menthol \men"thol\, n. [Mentha + -ol.] (Chem.)
A white, crystalline, aromatic substance (C10H20O)
resembling camphor, extracted from oil of peppermint
(Mentha); -- called also mint camphor or {peppermint
camphor}. It has the peculiar effect on skin and membranes of
making them feel cool, and is used in liqueurs, confections,
cigarettes, cough drops and perfumes, among other things.
[1913 Webster +PJC] |
C11H20O2
(gcide) | Undecylenic \Un*dec`y*len"ic\, a. (Chem.)
Pertaining to, or designating, an acid C11H20O2, homologous
with acrylic acid, and obtained as a white crystalline
substance by the distillation of castor oil.
[1913 Webster] |
C20H12O5
(gcide) | fluorescein \fluo`res"ce*in\, fluoresceine \fluo`res"ce*ine\,
fluorescein \flu`o*res"ce*["i]n\, n. (Chem.)
A yellowish red, crystalline substance, C20H12O5, produced
by heating together phthalic anhydride and resorcin; -- so
called, from the very brilliant yellowish green fluorescence
of its alkaline solutions. It has acid properties, and its
salts of the alkalies are known to the trade under the name
of uranin.
Syn: fluorescein, fluorescent dye, resorcinolphthalein.
[1913 Webster] |
C20H14
(gcide) | Dinaphthyl \Di*naph"thyl\, n. [Pref. di- + naphthylene.] (Chem.)
A colorless, crystalline hydrocarbon, C20H14, obtained from
naphthylene, and consisting of a doubled naphthylene radical.
[1913 Webster] |
C20H14O4
(gcide) | Phenolphthalein \Phe`nol*phthal"e*in\, or Phenol phthalein
\Phenol phthalein\, n. (Chem.)
A white or yellowish white crystalline substance, C20H14O4,
formed by condensation of the anhydride of phthalic acid and
phenol. Its solution in alkalies is brilliant red, but is
decolorized by acids. This reaction, being very delicate, is
used as a pH indicator. It is sometimes used as a laxative in
veterinary medicine.
[Webster 1913 Suppl. +PJC] |
C20H16O3
(gcide) | Rosolic \Ro*sol"ic\, a. [Rose + carbolic.] (Chem.)
Pertaining to, or designating, a complex red dyestuff (called
rosolic acid) which is analogous to rosaniline and aurin. It
is produced by oxidizing a mixture of phenol and cresol, as a
dark red amorphous mass, C20H16O3, which forms weak salts
with bases, and stable ones with acids. Called also {methyl
aurin}, and, formerly, corallin.
[1913 Webster] |
C20H21N3O
(gcide) | Rosaniline \Ros*an"i*line\ (? or ?), n. [Rose + aniline.]
(Chem.)
A complex nitrogenous base, C20H21N3O, obtained by
oxidizing a mixture of aniline and toluidine, as a colorless
crystalline substance which forms red salts. These salts are
essential components of many of the socalled aniline dyes, as
fuchsine, aniline red, etc. By extension, any one of the
series of substances derived from, or related to, rosaniline
proper.
[1913 Webster] |
C20H22O10
(gcide) | Erythrin \E*ryth"rin\, Erythrine \E*ryth"rine\, n. [Gr.
'eryqro`s red.]
1. (Chem.) A colorless crystalline substance, C20H22O10,
extracted from certain lichens, as the various species of
Rocella. It is a derivative of orsellinic acid. So
called because of certain red compounds derived from it.
Called also erythric acid.
[1913 Webster]
2. (Min.) See Erythrite, 2.
[1913 Webster] |
C20H24N2O2
(gcide) | Quinine \Qui"nine\, n. [F. (cf. Sp. quinina), fr. Sp. quina, or
quinaquina, Peruvian bark, fr. Peruv. kina, quina, bark. Cf.
Kinic.] (Chem.)
An alkaloid extracted from the bark of several species of
cinchona (esp. Cinchona Calisaya) as a bitter white
crystalline substance, C20H24N2O2. Hence, by extension
(Med.), any of the salts of this alkaloid, as the acetate,
chloride, sulphate, etc., employed as a febrifuge or
antiperiodic. Called also quinia, quinina, etc. [Written
also chinine.]
[1913 Webster] |
C20H28O
(gcide) | Retinal \Ret"i*nal\, n. (Chem.)
A retinoid compound (C20H28O), closely related to vitamin
A, which is a component of the visual pigments in the eye. It
is also called retinaldehyde and vitamin A aldehyde.
[PJC]vitamin A2 \vitamin A2\ n.
dehydroretinol (C20H28O), one of the substances also called
vitamin A. It has about 40% of the bioactivity of vitamin
A1.
Syn: dehydroretinol.
[WordNet 1.5 +PJC] |
C20H28O2
(gcide) | Retinoic acid \Ret`in*o"ic ac"id\, n. (Chem.)
A retinoid compound (C20H28O2), closely related to vitamin
A. It is also called tretinoin and vitamin A acid.
[PJC] |
C20H30O
(gcide) | vitamin A1 \vitamin A1\ n.
retinol (C20H30O), one of the substances also called
vitamin A. It is also called more specifically {vitamin A
alcohol}. It is a required factor for human nutrition. The
USP unit of activity is equal to 0.30 micrograms of retinol.
Syn: retinol.
[WordNet 1.5 +PJC]axerophthol \axerophthol\ n.
1. a vitamin essential for normal vision (C20H30O); it
prevents night blindness or inflammation or dryness of the
eyes; same as vitamin A. One U.S.P. unit of vitamin A is
equivalent to 0.30 micrograms of pure vitamin A alcohol.
Syn: vitamin A; vitamin A alcohol; antiophthalmic factor;
biosterol; retinol; A.
[WordNet 1.5 +PJC] |
C20H38
(gcide) | Eikosylene \Ei*kos"y*lene\, n. [Gr. e'i`kosi twenty +
acetylene.] (Chem.)
A liquid hydrocarbon, C20H38, of the acetylene series,
obtained from brown coal.
[1913 Webster] |
C20H42
(gcide) | Eikosane \Ei"ko*sane\, n. [Gr. e'i`kosi.] (Chem.)
A solid hydrocarbon, C20H42, of the paraffin series, of
artificial production, and also probably occurring in
petroleum.
[1913 Webster] |
C20H8O6
(gcide) | Cerulein \Ce*ru"le*in\, n. [L. caeruleus sky-blue.] (Chem.)
A fast dyestuff, C20H8O6, made by heating gallein with
strong sulphuric acid. It dyes mordanted fabrics green.
[Webster 1913 Suppl.] |
C21H20O2
(gcide) | tetrahydrocannabinol \tet`ra*hy`dro*can*nab"i*nol\
(t[e^]t`r[.a]*h[imac]`dr[-o]*k[a^]n*n[a^]b"[i^]n[add]l), n.
(Chem. & Med.)
A chemical substance (C21H20O2) which is produced by the
hemp plant (Cannabis sativa), and is the physiologically
active agent of dried preparations of that plant, called
variously marijuana, hashish, ganja, hemp, etc.; also called
THC. It causes the euphoric effect for which the
preparations are smoked or chewed. It is used in medicine in
a purified form as an antiemetic (an antinausea agent),
especially in conjunction with chemotherapy of cancer. It
occurs primarily as the [Delta]1-3,4-trans isomer, also
called [Delta]9-THC, with small amounts of the
[Delta]6-3,4-trans isomer detectable at about 1%. It is a
controlled substance, classified as a hallucinogen, and its
possession or distribution is illegal in almost all states of
the United States. --MI11
[PJC] |
C9H20
(gcide) | Nonane \Non"ane\, n. [L. nonus ninth.] (Chem.)
One of a group of metameric hydrocarbons C9H20 of the
paraffin series; -- so called because of the nine carbon
atoms in the molecule. Normal nonane is a colorless
volatile liquid, an ingredient of ordinary kerosene.
[1913 Webster] |
CH20n
(gcide) | paraformaldehyde \par`a*form*al"de*hyde\, n. [Pref. para- +
formaldehyde.] (Chem.)
A polymer of formaldehyde obtained as a white crystalline
substance by concentration of a formaldehyde solution.
Formula (CH20)n. It dissolves in hot water with the release
of formaldehyde, and is used as a disinfectant.
[1913 Webster +PJC] |
year 2000 bug
(gcide) | millennium bug \mil*len"ni*um bug`\ (m[i^]l*l[e^]n"n[i^]*[u^]m
b[u^]g`), n. (Computers)
An error in the coding of certain computer programs which
store the year component of the date as two digits, assuming
that the first two digits are 19, rather than as a complete
number of four digits; when such programs are used after
January 1, 2000, the date may be misinterpreted, causing
serious errors or total failure of the program; -- called
also year 2000 bug, year 2000 problem and Y2K bug.
Note: In the several years leading up to the year 2000, large
corporations and other users of computers in total
spent many billions of dollars correcting this error in
the programs they use.
[PJC]year 2000 bug \year 2000 bug\, year 2000 problem \year 2000
problem\, n. (Computers)
an error in the coding of certain computer programs in which
the year portion of dates was represented by only two decimal
digits, assuming that the first two digits are "19". In such
a program the the year 1975 is represented as "75". This was
a common practise in computer programming even into the
1990's, as many programmers failed to consider that their
programs would be used after the year 1999. Thus, with such a
program, a person born in 2000 would be considered as 101
years old in 2001; many different serious problems, as
various as the programs, could be caused by such an error.
Note: In 1998 many programs with the year 2000 bug were still
not corrected, and it is not clear how many programs
will retain the bug when the year 2000 arrives. Tune in
then.
Syn: millemium bug, Y2K bug, Y2K problem. [PJC] |
year 2000 compliant
(gcide) | year 2000 compliant \year 2000 compliant\, a. (Computers)
having dates fully and properly represented, and not
susceptible to failure due to the year 2000 bug.
Syn: date compliant. [PJC] |
year 2000 problem
(gcide) | millennium bug \mil*len"ni*um bug`\ (m[i^]l*l[e^]n"n[i^]*[u^]m
b[u^]g`), n. (Computers)
An error in the coding of certain computer programs which
store the year component of the date as two digits, assuming
that the first two digits are 19, rather than as a complete
number of four digits; when such programs are used after
January 1, 2000, the date may be misinterpreted, causing
serious errors or total failure of the program; -- called
also year 2000 bug, year 2000 problem and Y2K bug.
Note: In the several years leading up to the year 2000, large
corporations and other users of computers in total
spent many billions of dollars correcting this error in
the programs they use.
[PJC]year 2000 bug \year 2000 bug\, year 2000 problem \year 2000
problem\, n. (Computers)
an error in the coding of certain computer programs in which
the year portion of dates was represented by only two decimal
digits, assuming that the first two digits are "19". In such
a program the the year 1975 is represented as "75". This was
a common practise in computer programming even into the
1990's, as many programmers failed to consider that their
programs would be used after the year 1999. Thus, with such a
program, a person born in 2000 would be considered as 101
years old in 2001; many different serious problems, as
various as the programs, could be caused by such an error.
Note: In 1998 many programs with the year 2000 bug were still
not corrected, and it is not clear how many programs
will retain the bug when the year 2000 arrives. Tune in
then.
Syn: millemium bug, Y2K bug, Y2K problem. [PJC] |
120
(wn) | 120
adj 1: being ten more than one hundred ten [syn: {one hundred
twenty}, 120, cxx]
n 1: the cardinal number that is the product of ten and twelve
[syn: long hundred, great hundred, 120] |
120th
(wn) | 120th
adj 1: the ordinal number of one hundred twenty in counting
order [syn: hundred-and-twentieth, 120th] |
1820s
(wn) | 1820s
n 1: the decade from 1820 to 1829 |
1920s
(wn) | 1920s
n 1: the decade from 1920 to 1929 [syn: twenties, 1920s] |
20/20
(wn) | 20/20
n 1: normal visual acuity, as measured by the ability to read
charts at a distance of 20 feet [syn: twenty-twenty,
20/20] |
200
(wn) | 200
adj 1: being ten more than one hundred ninety [syn: {two
hundred}, 200, cc] |
200th
(wn) | 200th
adj 1: the ordinal number of two hundred in counting order [syn:
two-hundredth, 200th] |
20th
(wn) | 20th
adj 1: coming next after the nineteenth in position [syn:
twentieth, 20th] |
atomic number 20
(wn) | atomic number 20
n 1: a white metallic element that burns with a brilliant light;
the fifth most abundant element in the earth's crust; an
important component of most plants and animals [syn:
calcium, Ca, atomic number 20] |
january 20
(wn) | January 20
n 1: a Christian holy day [syn: Saint Agnes's Eve, {January
20}]
2: the day designated for inauguration of the United States
President [syn: Inauguration Day, January 20] |
k-dur 20
(wn) | K-Dur 20
n 1: salt of potassium (KCl) (trade names K-Dur 20, Kaochlor and
K-lor and Klorvess and K-lyte); taken in tablet form to
treat potassium deficiency [syn: potassium chloride,
potassium muriate, potash muriate, K-Dur 20,
Kaochlor, K-lor, Klorvess, K-lyte] |
120 reset
(foldoc) | 120 reset
/wuhn-twen'tee ree'set/ (After 120 volts, US mains
voltage) To cycle power on a computer in order to reset or
unjam it.
Compare Big Red Switch, power cycle.
[Jargon File]
(1994-11-23)
|
20-gate
(foldoc) | 20-GATE
An algebraic language for the G-20, developed at
Carnegie around 1965.
(1995-02-27)
|
32000
(foldoc) | National Semiconductor 32000
32000
NS32000
(NS32000) The first of a series of
microprocessors from National Semiconductor. The 320xx
processors have an interface which allows coprocessors such
as FPUs and MMUs to be attached in a chain.
The 320xx was the predecessor of the Swordfish processor.
[Details?]
(1994-11-17)
|
68020
(foldoc) | Motorola 68020
68020
MC68020
A microprocessor from Motorola. It was the
successor to the Motorola 68010 and was followed by the
Motorola 68030. The 68020 has 32-bit internal and external
data and address buses and a 256-byte instruction buffer,
arranged as 64 direct-mapped 4-byte entries[?].
The 68020 added many improvements to the 68010 including a
32-bit ALU and external data bus and address bus, and
new instrucitons and addressing modes. The 68020 (and
68030) had a proper three-stage pipeline.
The new instructions included some minor improvements and
extensions to the supervisor state, some support for
high-level languages which didn't get used much (and was
removed from future 680x0 processors[?]), bigger (32 x 32-bit)
multiply and divide instructions, and bit field manipulations.
The new adderessing modes added another level of indirection
to many of the pre-existing modes, and added quite a bit of
flexibility to various indexing modes and operations.
The instruction buffer (an instruction cache) was 256
bytes, arranged as 64 direct-mapped 4-byte entries. Although
small, it made a significant difference in the performance of
many applications.
The 68881 and the faster 68882 FPU chips could be used with
the 68020.
The 68020 was used in many models of the Apple Macintosh II
series of personal computers and Sun 3 workstations.
(2001-03-07)
|
80/20 rule
(foldoc) | eighty-twenty rule
80/20 rule
The program-design version of the law of
diminishing returns. The 80/20 rule says that roughly 80% of
the problem can be solved with 20% of the effort that it would
take to solve the whole problem.
For example, parsing e-mail addresses in "From:" lines in
e-mail messages is notoriously difficult if you follow the RFC
2822 specification. However, about 60% of actual "From:"
lines are in the format "From: Their Name ", with a
far more constrained idea of what can be in "user" or "host"
than in RFC 2822. Another 25% just add double-quotes around
"Their Name". Matching just those two patterns would thus
cover 85% of "From:" lines, with a tiny portion of the code
required to fully implement RFC2822.
(Adding support for "From: user@host" and "From: user@host
(Their Name) " brings coverage to almost 100%, leaving only
really baroque things that RFC-2822 permits, like "From:
Pete(A wonderful \) chap) |
a20 handler
(foldoc) | A20 handler
IBM PC memory manager software providing
HMA. XMMs usually provide this functionality. Named
after the 21st address line (A20), controlling the access to
HMA.
(1996-01-10)
|
berkeley edif200
(foldoc) | Berkeley EDIF200
translator-building toolkit
Wendell C. Baker and Prof A. Richard Newton of the Electronics
Research Laboratory, Department of Electrical Engineering and
Computer Sciences at the University of California, Berkeley.
Version 7.6. Restriction: no-profit without permission.
(ftp://ic.berkeley.edu/pub/edif).
(1990-07-01)
|
bs2000
(foldoc) | BS2000
An operating system from SNI for
mainframes.
(http://mch.sni.de.public/bs2000/server.htm).
(1997-06-13)
|
daisy 201
(foldoc) | DAISY 201
An early system on G-15.
[Listed in CACM 2(5):16 (May 1959)].
|
datatron 200 series
(foldoc) | Datatron 200 series
A family of computers produced by Burroughs that
included the Datatron 204 and Datatron 220.
(2007-01-16)
|
gateway 2000
(foldoc) | Gateway 2000
One of the lagest US manufacturers of {IBM
compatibles}, founded by CEO Ted Waitt in September 1985, in
Sioux City, Iowa. In 1990 the company moved to North Sioux
City, South Dakota.
In August 1994, quarterly profits were $4 million on sales of
$617 million. Sales for the first quarter of 1997 were $1.42
billion.
On 1997-05-15 Gateway bought the Amiga brand.
(http://gw2k.com/).
(1998-07-30)
|
ibm 1620
(foldoc) | IBM 1620
A computer built by IBM and released in late
1959. The 1620 cost from around $85,000(?) up to hundreds of
thousands of dollars(?) according to the configuration. It
was billed as a "small scientific computer" to distinguish it
from the business-oriented IBM 1401. It was regarded as
inexpensive, and many schools started out with one.
It was either developed for the US Navy to teach computing, or
as a replacement for the very successful IBM 650 which did
quite well in the low end scientific market. Rumour has it
that the Navy called this computer the CADET - Can't Add,
Doesn't Even Try.
The ALU used lookup tables to add, subtract and multiply but
it could do address increments and the like without the
tables. You could change the number base by adjusting the
tables, which were input during the boot sequence from
Hollerith cards. The divide instruction required additional
hardware, as did floating point operations.
The basic machine had 20,000 decimal digits of {ferrite core
memory} arranged as a 100 by 100 array of 12-bit locations,
each holding two digits. Each digit was stored as four
numeric bits, one flag bit and one parity bit. The numeric
bits stored a decimal digit (values above nine were illegal).
Memory was logically divided into fields. On the high-order
digit of a field the flag bit indicated the end of the field.
On the low-order digit it indicated a negative number. A flag
bit on the low order of the address indicated {indirect
addressing} if you had that option installed. A few "illegal"
bit combinations were used to store things like record marks
and "numeric blanks".
On a subroutine call it stored the return address in the
five digits just before the entry point to the routine, so you
had to build your own stack to do recursion.
The enclosure was grey, and the core was about four or five
inches across. The core memory was kept cool inside a
temperature-controlled box. The machine took a few minutes to
warm up after power on before you could use it. If it got too
hot there was a thermal cut-out switch that would shut it
down.
Memory could be expanded up to 100,000 digits in a second
cabinet. The cheapest package used paper tape for I/O. You
could also get punched cards and later models could be
hooked up to a 1311 disk drive (a two-megabyte {washing
machine}), a 1627 plotter, and a 1443 line printer.
Because the 1620 was popular with colleges, IBM ran a clearing
house of software for a nominal cost such as Snobol,
COBOL, chess games, etc.
The model II, released about three years later, could add and
subtract without tables. The clock period decreased from 20
to 10 microseconds, instruction fetch sped up by a few cycles
and it added index registers of some sort. Some of the
model I's options were standard on the model II, like
indirect addressing and the console teletype changed
from a model C to a Selectric. Later still, IBM marketed
the IBM 1710.
A favorite use was to tune a FM radio to pick up the
"interference" from the lights on the console. With the right
delay loops you could generate musical notes. Hackers wrote
interpreters that played music from notation like "C44".
IBM 1620 console (img:/pub/misc/IBM1620-console.jpg)
1620 consoles were used as props to represent Colossus in
the film "The Forbin Project", though most of the machines had
been scrapped by the time the film was made.
{A fully configured 1620
(http://uranus.ee.auth.gr/TMTh/exhibit.htm)}.
{IBM 1620 at Tuck School of Business, Dartmouth College, Hanover, NH,
USA (img:/pub/misc/IBM1620-Tuck1960s.jpg)}
(Thanks Victor E. McGee, pictured).
["Basic Programming Concepts and the IBM 1620 Computer",
Leeson and Dimitry, Holt, Rinehart and Winston, 1962].
(2018-09-11)
|
ibm 3720
(foldoc) | IBM 3720
A communications controller made by IBM,
suitable for use in an IBM S/390. Official service support
was withdrawn in 1999 in favour of the IBM 3745.
(http://ibm.com/search?q=3720&realm=Networking).
(2000-02-21)
|
intersil 6120
(foldoc) | Intersil 6120
(IMS 6120) An improved version of the {Intersil
6100}. The 6120 was used in the DECmate.
[Details?]
(1994-11-23)
|
iso 8208
(foldoc) | X.25
ISO 8208
An ITU-T standard protocol suite
for the DTE-DCE interface in a packet-switched network,
approved by ISO. X.25 defines standard physical layer,
data link layer and network layers (layers 1 through 3).
It was developed to describe how data passes into and out of
public data communications networks. X.25 networks are in use
throughout the world.
Document: ISO 8208.
Several other ITU-T recommendations are relevant to {packet
switching}: X.3, X.28, X.29, X.75.
(1996-08-10)
|
itu x.209
(foldoc) | Basic Encoding Rules
ISO 8825
ITU X.209
X.209
(BER) ASN.1 encoding rules for
producing self-identifying and self-delimiting {transfer
syntax} for data structures described in ASN.1 notations.
BER is an self-identifying and self-delimiting encoding
scheme, which means that each data value can be identified,
extracted and decoded individually.
Huw Rogers once described BER as "a triumph of bloated theory
over clean implementation". He also criticises it as designed
around bitstreams with arbitrary boundaries between data which
can only be determined at a high level.
Documents: ITU-T X.690, ISO 8825-1.
See also CER, DER, PER.
(1998-05-28)
|
jpeg-2000
(foldoc) | JPEG-2000
A potential successor to JPEG with
better compression and multiresolution images. JPEG-2000
gives reasonable quality down to 0.1 bits/pixel (JPEG quality
drops dramatically below about 0.4 bits/pixel).
(2001-12-02)
|
mc68020
(foldoc) | Motorola 68020
68020
MC68020
A microprocessor from Motorola. It was the
successor to the Motorola 68010 and was followed by the
Motorola 68030. The 68020 has 32-bit internal and external
data and address buses and a 256-byte instruction buffer,
arranged as 64 direct-mapped 4-byte entries[?].
The 68020 added many improvements to the 68010 including a
32-bit ALU and external data bus and address bus, and
new instrucitons and addressing modes. The 68020 (and
68030) had a proper three-stage pipeline.
The new instructions included some minor improvements and
extensions to the supervisor state, some support for
high-level languages which didn't get used much (and was
removed from future 680x0 processors[?]), bigger (32 x 32-bit)
multiply and divide instructions, and bit field manipulations.
The new adderessing modes added another level of indirection
to many of the pre-existing modes, and added quite a bit of
flexibility to various indexing modes and operations.
The instruction buffer (an instruction cache) was 256
bytes, arranged as 64 direct-mapped 4-byte entries. Although
small, it made a significant difference in the performance of
many applications.
The 68881 and the faster 68882 FPU chips could be used with
the 68020.
The 68020 was used in many models of the Apple Macintosh II
series of personal computers and Sun 3 workstations.
(2001-03-07)
|
mips r2000
(foldoc) | MIPS R2000
R2000
The R2000 design came, in about 1987, from the
Stanford MIPS project, which stood for Microprocessor
without Interlocked Pipeline Stages.
Like the AMD 29000, the R2000 has no {condition code
register} considering it a potential bottleneck. The
program counter can be read like other registers.
The CPU includes an MMU that can also control a cache, and
the CPU can operate as big-endian or little-endian. There
is a FPU, the R2010.
Versions include the MIPS R3000 and MIPS R4000.
(1995-02-09)
|
mips r2010
(foldoc) | MIPS R2010
A FPU for the MIPS R2000.
(1995-02-09)
|
ml-2000
(foldoc) | ML-2000
An extension and redesign of Standard ML. Under
development.
|
motorola 68020
(foldoc) | Motorola 68020
68020
MC68020
A microprocessor from Motorola. It was the
successor to the Motorola 68010 and was followed by the
Motorola 68030. The 68020 has 32-bit internal and external
data and address buses and a 256-byte instruction buffer,
arranged as 64 direct-mapped 4-byte entries[?].
The 68020 added many improvements to the 68010 including a
32-bit ALU and external data bus and address bus, and
new instrucitons and addressing modes. The 68020 (and
68030) had a proper three-stage pipeline.
The new instructions included some minor improvements and
extensions to the supervisor state, some support for
high-level languages which didn't get used much (and was
removed from future 680x0 processors[?]), bigger (32 x 32-bit)
multiply and divide instructions, and bit field manipulations.
The new adderessing modes added another level of indirection
to many of the pre-existing modes, and added quite a bit of
flexibility to various indexing modes and operations.
The instruction buffer (an instruction cache) was 256
bytes, arranged as 64 direct-mapped 4-byte entries. Although
small, it made a significant difference in the performance of
many applications.
The 68881 and the faster 68882 FPU chips could be used with
the 68020.
The 68020 was used in many models of the Apple Macintosh II
series of personal computers and Sun 3 workstations.
(2001-03-07)
|
national semiconductor 32000
(foldoc) | National Semiconductor 32000
32000
NS32000
(NS32000) The first of a series of
microprocessors from National Semiconductor. The 320xx
processors have an interface which allows coprocessors such
as FPUs and MMUs to be attached in a chain.
The 320xx was the predecessor of the Swordfish processor.
[Details?]
(1994-11-17)
|
ns32000
(foldoc) | National Semiconductor 32000
32000
NS32000
(NS32000) The first of a series of
microprocessors from National Semiconductor. The 320xx
processors have an interface which allows coprocessors such
as FPUs and MMUs to be attached in a chain.
The 320xx was the predecessor of the Swordfish processor.
[Details?]
(1994-11-17)
|
pc200
(foldoc) | Sinclair PC200
PC200
(http://nonowt.demon.co.uk/magfold/articfol/the_miss.htm).
[Summary?]
1998-07-28
|
pdp-20
(foldoc) | PDP-20
The most famous computer that never was. PDP-10 computers
running the TOPS-10 operating system were labelled
"DECsystem-10" as a way of differentiating them from the
PDP-11. Later on, those systems running TOPS-20 were
labelled "DECSYSTEM-20" (the block capitals being the result
of a lawsuit brought against DEC by Singer, which once made a
computer called "system-10"), but contrary to popular lore
there was never a "PDP-20"; the only difference between a 10
and a 20 was the operating system and the colour of the
paint. Most (but not all) machines sold to run TOPS-10 were
painted "Basil Blue", whereas most TOPS-20 machines were
painted "Chinese Red" (often mistakenly called orange).
[Jargon File]
(1994-12-21)
|
r2000
(foldoc) | MIPS R2000
R2000
The R2000 design came, in about 1987, from the
Stanford MIPS project, which stood for Microprocessor
without Interlocked Pipeline Stages.
Like the AMD 29000, the R2000 has no {condition code
register} considering it a potential bottleneck. The
program counter can be read like other registers.
The CPU includes an MMU that can also control a cache, and
the CPU can operate as big-endian or little-endian. There
is a FPU, the R2010.
Versions include the MIPS R3000 and MIPS R4000.
(1995-02-09)
|
rfc 1208
(foldoc) | RFC 1208
The RFC defining many of the
network-related terms in this dictionary.
(rfc:1208).
["A Glossary of Networking Terms", Jacobsen, O., and D. Lynch,
RFC 1208, Interop, Inc., March 1991.]
(1996-08-06)
|
rfc 1520
(foldoc) | RFC 1520
The RFC defining {Classless
Inter-Domain Routing}.
(rfc:1520).
(1996-10-01)
|
|
){kind=link}