| slovo | definícia |
Test act
(gcide) | Test \Test\, n. [OE. test test, or cupel, potsherd, F. t[^e]t,
from L. testum an earthen vessel; akin to testa a piece of
burned clay, an earthen pot, a potsherd, perhaps for tersta,
and akin to torrere to patch, terra earth (cf. Thirst, and
Terrace), but cf. Zend tasta cup. Cf. Test a shell,
Testaceous, Tester a covering, a coin, Testy,
{T[^e]te-[`a]-t[^e]te}.]
1. (Metal.) A cupel or cupelling hearth in which precious
metals are melted for trial and refinement.
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Our ingots, tests, and many mo. --Chaucer.
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2. Examination or trial by the cupel; hence, any critical
examination or decisive trial; as, to put a man's
assertions to a test. "Bring me to the test." --Shak.
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3. Means of trial; as, absence is a test of love.
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Each test every light her muse will bear. --Dryden.
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4. That with which anything is compared for proof of its
genuineness; a touchstone; a standard.
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Life, force, and beauty must to all impart,
At once the source, and end, and test of art.
--Pope.
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5. Discriminative characteristic; standard of judgment;
ground of admission or exclusion.
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Our test excludes your tribe from benefit. --Dryden.
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6. Judgment; distinction; discrimination.
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Who would excel, when few can make a test
Betwixt indifferent writing and the best? --Dryden.
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7. (Chem.) A reaction employed to recognize or distinguish
any particular substance or constituent of a compound, as
the production of some characteristic precipitate; also,
the reagent employed to produce such reaction; thus, the
ordinary test for sulphuric acid is the production of a
white insoluble precipitate of barium sulphate by means of
some soluble barium salt.
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8. A set of questions to be answered or problems to be
solved, used as a means to measure a person's knowledge,
aptitude, skill, intelligence, etc.; in school settings,
synonymous with examination or exam; as, an
intelligence test. Also used attributively; as a test
score, test results.
[PJC]
Test act (Eng. Law), an act of the English Parliament
prescribing a form of oath and declaration against
transubstantiation, which all officers, civil and
military, were formerly obliged to take within six months
after their admission to office. They were obliged also to
receive the sacrament according to the usage of the Church
of England. --Blackstone.
Test object (Optics), an object which tests the power or
quality of a microscope or telescope, by requiring a
certain degree of excellence in the instrument to
determine its existence or its peculiar texture or
markings.
Test paper.
(a) (Chem.) Paper prepared for use in testing for certain
substances by being saturated with a reagent which
changes color in some specific way when acted upon by
those substances; thus, litmus paper is turned red by
acids, and blue by alkalies, turmeric paper is turned
brown by alkalies, etc.
(b) (Law) An instrument admitted as a standard or
comparison of handwriting in those jurisdictions in
which comparison of hands is permitted as a mode of
proving handwriting.
Test tube. (Chem.)
(a) A simple tube of thin glass, closed at one end, for
heating solutions and for performing ordinary
reactions.
(b) A graduated tube.
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Syn: Criterion; standard; experience; proof; experiment;
trial.
Usage: Test, Trial. Trial is the wider term; test is a
searching and decisive trial. It is derived from the
Latin testa (earthen pot), which term was early
applied to the fining pot, or crucible, in which
metals are melted for trial and refinement. Hence the
peculiar force of the word, as indicating a trial or
criterion of the most decisive kind.
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I leave him to your gracious acceptance, whose
trial shall better publish his commediation.
--Shak.
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Thy virtue, prince, has stood the test of
fortune,
Like purest gold, that tortured in the furnace,
Comes out more bright, and brings forth all its
weight. --Addison.
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| | podobné slovo | definícia |
joint test action group
(foldoc) | Joint Test Action Group
IEEE Standard 1149.1
JTAG
(JTAG, or "IEEE Standard 1149.1") A standard specifying
how to control and monitor the pins of compliant devices on a
printed circuit board.
Each device has four JTAG control lines. There is a
common reset (TRST) and clock (TCLK). The data line
daisy chains one device's test data out (TDO) pin
to the test data in (TDI) pin on the next device.
The protocol contains commands to read and set the values of
the pins (and, optionally internal registers) of devices.
This is called "boundary scanning". The protocol makes
board testing easier as signals that are not visible at the
board connector may be read and set.
The protocol also allows the testing of equipment, connected
to the JTAG port, to identify components on the board (by
reading the device identification register) and to control and
monitor the device's outputs.
JTAG is not used during normal operation of a board.
JTAG Technologies B.V. (http://jtag.com/).
{Boundary Scan/JTAG Technical Information - Xilinx, Inc.
(http://xilinx.com/support/techsup/journals/jtag/)}.
{Java API for Boundary Scan FAQs - Xilinx Inc.
(http://xilinx.com/products/software/sx/sxfaqs.htm)}.
{JTAG Boundary-Scan Test Products - Corelis, Inc.
(http://corelis.com/products/scanovrv.html)}.
{"Logic analyzers stamping out bugs at the cutting edge", EDN
Access, 1997-04-10
(http://ednmag.com/ednmag/reg/1997/041097/08df_02.htm)}.
{IEEE 1149.1 Device Architecture - Boundary-Scan Tutorial from
ASSET InterTech, Inc.
(http://asset-intertech.com/tutorial/arch.htm)}.
{"Application-Specific Integrated Circuits", Michael John
Sebatian Smith, published Addison-Wesley - Design Automation
Cafe
(http://dacafe.com/DACafe/EDATools/EDAbooks/ASIC/Book/CH14/CH14.2.htm)}.
{Software Debug options on ASIC cores - Embedded Systems
Programming Archive (http://embedded.com/97/feat9701.htm)}.
{Designing for On-Board Programming Using the IEEE 1149.1
(JTAG) Access Port - Intel
(http://developer.intel.com/design/flcomp/applnots/292186.htm)}.
{Built-In Self-Test Using Boundary Scan by Texas Instruments -
EDTN Network
(http://edtn.com/scribe/reference/appnotes/md003e9a.htm)}.
(1999-11-15)
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