TIA definition
1. <chat> Thanks in advance.
2. <body> Telecommunications Industry Association.
3. <software> The Internet Adapter.
4. <graphics, hardware> Television Interface Adaptor.
(1999-12-06)
Nearby terms:
thumbnail « Thunderbird « thunk « TIA » tick » TickIT » Tickle
tick definition
1. A jiffy (sense 1). 2. In simulations, the discrete unit
of time that passes between iterations of the simulation
mechanism. In AI applications, this amount of time is often
left unspecified, since the only constraint of interest is the
ordering of events. This sort of AI simulation is often
pejoratively referred to as "tick-tick-tick" simulation,
especially when the issue of simultaneity of events with long,
independent chains of causes is handwaved. 3. In the FORTH
language, a single quote character.
[Jargon File]
Nearby terms:
Thunderbird « thunk « TIA « tick » TickIT » Tickle » tickle a bug
TickIT definition
A software industry quality assessment scheme.
Nearby terms:
thunk « TIA « tick « TickIT » Tickle » tickle a bug » tick-list features
Tickle definition
<text, tool> A text editor, file translator and TCL
interpreter for the Macintosh.
Version 5.0v1. The text editor breaks the 32K limit (like
MPW).
The file translation utilities support drag and drop
handling via tcl scripts of BinHex, MacBinary, Apple
Computer Single/Double, StuffIt (with engine), Unix
compress, Unix tar and UUencode files as well as text
translation.
Tickle implements tcl 7.0 with tclX extensions and
Macintosh equivalents of Unix's ls, pwd, cd
commands. It provides Macintosh access to Resource Manager,
Communications Toolbox, OSA Components (and
AppleScript), Editions (publish and subscribe) and Apple
Events (including AEBuild and AEPrint). OSA Script support
allows programming of any OSA scripting component within
Tickle interpreter windows. It provides the OSAtcl and OSAJ
J/APL extensions and creates "Ticklets" which are small
application programs that carry only the tcl script and use
code in the OSAtcl component to drive an application that
allows drag and drop with tcl scripts. Tickle is scriptable
and recordable.
ftp://ftp.msen.com/pub/vendor/ice/tickle/Tickle5.0v1.hqx.
E-mail: <time@ice.com>.
(1994-10-12)
Nearby terms:
TIA « tick « TickIT « Tickle » tickle a bug » tick-list features » TIFF
tickle a bug definition
To cause a normally hidden bug to manifest itself through some
known series of inputs or operations. "You can tickle the bug
in the Paradise VGA card's highlight handling by trying to set
bright yellow reverse video."
[Jargon File]
Nearby terms:
tick « TickIT « Tickle « tickle a bug » tick-list features » TIFF » tiger team
tick-list features definition
(Acorn Computers) Features in software or hardware that
customers insist on but never use (calculators in desktop TSRs
and that sort of thing). The American equivalent would be
"checklist features", but this jargon sense of the phrase has
not been reported.
(1995-01-06)
Nearby terms:
TickIT « Tickle « tickle a bug « tick-list features » TIFF » tiger team » tight loop
TIFF definition
Tagged Image File Format
Nearby terms:
Tickle « tickle a bug « tick-list features « TIFF » tiger team » tight loop » tilde
tiger team definition
(US military jargon) 1. Originally, a team whose purpose is to
penetrate security, and thus test security measures. These
people are paid professionals who do hacker-type tricks,
e.g. leave cardboard signs saying "bomb" in critical defence
installations, hand-lettered notes saying "Your codebooks have
been stolen" (they usually haven't been) inside safes, etc.
After a successful penetration, some high-ranking security
type shows up the next morning for a "security review" and
finds the sign, note, etc. and all hell breaks loose. Serious
successes of tiger teams sometimes lead to early retirement
for base commanders and security officers (see the patch
entry for an example).
2. Recently, and more generally, any official inspection team
or special firefighting group called in to look at a
problem.
A subset of tiger teams are professional crackers, testing
the security of military computer installations by attempting
remote attacks via networks or supposedly "secure"
communication channels. Some of their escapades, if
declassified, would probably rank among the greatest hacks of
all times. The term has been adopted in commercial
computer-security circles in this more specific sense.
[Jargon File]
Nearby terms:
tickle a bug « tick-list features « TIFF « tiger team » tight loop » tilde » TILE Forth
tight loop definition
<programming> A loop of code that executes without releasing
any resources to other programs or the operating system.
Consider the following pointless BASIC loop that counts
upward indefinitely
10 i = i + 1
20 GOTO 10
Run on a single-user system such as MS-DOS this will not
cause any problems. Run on a cooperative multitasking
operating system such as Windows 3, the system would appear
to freeze.
A pre-emptive multitasking operating system such as
UNIX or Windows NT would "steal" cycles away from
the program and continue to run other programs.
See also busy-wait and multitasking.
(1999-05-06)
Nearby terms:
tick-list features « TIFF « tiger team « tight loop » tilde » TILE Forth » Tim Berners-Lee
tilde definition
<character> "~" ASCII character 126.
Common names are: ITU-T: tilde; squiggle; twiddle; not.
Rare: approx; wiggle; swung dash; enyay; INTERCAL: sqiggle
(sic).
Used as C's prefix bitwise negation operator; and in
Unix csh, GNU Emacs, and elsewhere, to stand for the
current user's home directory, or, when prefixed to a login
name, for the given user's home directory.
The "swung dash" or "approximation" sign is not quite the same
as tilde in typeset material but the ASCII tilde serves for
both (compare angle brackets).
[Has anyone else heard this called "tidal" (as in wave)?]
(1996-10-18)
Nearby terms:
TIFF « tiger team « tight loop « tilde » TILE Forth » Tim Berners-Lee » time bomb
TILE Forth definition
<language> A Forth interpreter in C for Unix by Mikael
Patel <mip@sectra.se>. TILE Forth comes with many Forth
libraries. It conforms to the Forth83 standard and is
distributed under GPL.
Current version: 2.1, as of 1991-11-13.
Availalbe via FTP from a GNU archive site.
(1991-11-13)
Nearby terms:
tiger team « tight loop « tilde « TILE Forth » Tim Berners-Lee » time bomb » time complexity
Tim Berners-Lee definition
<person> The man who invented the World-Wide Web while
working at the Center for European Particle Research (CERN).
Now Director of the World-Wide Web Consortium.
Tim Berners-Lee graduated from the Queen's College at Oxford
University, England, 1976. Whilst there he built his first
computer with a soldering iron, TTL gates, an M6800
processor and an old television.
He then went on to work for Plessey Telecommunications, and
D.G. Nash Ltd (where he wrote software for intelligent
printers and a multi-tasking operating system), before
joining CERN, where he designed a program called 'Enquire',
which was never published, but formed the conceptual basis for
today's World-Wide Web.
In 1984, he took up a fellowship at CERN, and in 1989, he
wrote the first World-Wide Web server, "httpd", and the
first client, "WorldWideWeb" a hypertext browser/editor
which ran under NEXTSTEP. The program "WorldWideWeb" was
first made available within CERN in December, and on the
Internet as a whole in the summer of 1991.
In 1994, Tim joined the Laboratory for Computer Science
(LCS) at the Massachusetts Institute of Technology (MIT).
In 1999, he became the first holder of the 3Com Founders
chair. He is also the author of "Weaving the Web", on the
past present and future of the Web.
In 2001, Tim was made a fellow of The Royal Society.
Tim is married to Nancy Carlson. They have two children, born
1991 and 1994.
http://www.w3.org/People/Berners-Lee/Longer.html.
(2001-06-17)
Nearby terms:
tight loop « tilde « TILE Forth « Tim Berners-Lee » time bomb » time complexity » Time Complex Simulator
time bomb definition
<software, security> A subspecies of logic bomb that is
triggered by reaching some preset time, either once or
periodically. There are numerous legends about time bombs set
up by programmers in their employers' machines, to go off if
the programmer is fired or laid off and is not present to
perform the appropriate suppressing action periodically.
Interestingly, the only such incident for which we have been
pointed to documentary evidence took place in the Soviet Union
in 1986! A disgruntled programmer at the Volga Automobile
Plant (where the Fiat clones called Ladas were manufactured)
planted a time bomb which, a week after he'd left on vacation,
stopped the entire main assembly line for a day. The case
attracted lots of attention in the Soviet Union because it was
the first cracking case to make it to court there. The
perpetrator got 3 years in jail.
[Jargon File]
(2001-09-15)
Nearby terms:
tilde « TILE Forth « Tim Berners-Lee « time bomb » time complexity » Time Complex Simulator » time division multiple access
time complexity definition
<complexity> The way in which the number of steps required by
an algorithm varies with the size of the problem it is
solving. Time complexity is normally expressed as an order of
magnitude, e.g. O(N^2) means that if the size of the problem
(N) doubles then the algorithm will take four times as many
steps to complete.
See also computational complexity, space complexity.
(1996-05-08)
Nearby terms:
TILE Forth « Tim Berners-Lee « time bomb « time complexity » Time Complex Simulator » time division multiple access » time division multiplexing
Time Complex Simulator definition
<simulation> (Tcsim) Complex arithmetic version of Tsim.
Contact: ZOLA Technologies.
(1996-01-18)
Nearby terms:
Tim Berners-Lee « time bomb « time complexity « Time Complex Simulator » time division multiple access » time division multiplexing » Time Domain Reflectometer
time division multiple access definition
time division multiplexing
Nearby terms:
time bomb « time complexity « Time Complex Simulator « time division multiple access » time division multiplexing » Time Domain Reflectometer » timeout
time division multiplexing definition
<communications> (TDM) A type of multiplexing where two or
more channels of information are transmitted over the same
link by allocating a different time interval ("slot" or
"slice") for the transmission of each channel. I.e. the
channels take turns to use the link. Some kind of periodic
synchronising signal or distinguishing identifier is usually
required so that the receiver can tell which channel is which.
TDM becomes inefficient when traffic is intermittent because
the time slot is still allocated even when the channel has no
data to transmit. Statistical time division multiplexing
was developed to overcome this problem.
Compare wavelength division multiplexing, frequency division
multiplexing, code division multiplexing.
(2001-06-27)
Nearby terms:
time complexity « Time Complex Simulator « time division multiple access « time division multiplexing » Time Domain Reflectometer » timeout » time quantum
Time Domain Reflectometer definition
<hardware, networking> (TDR) An electronic device for
detecting and locating short- or open-circuits in an
Ethernet cable. TDRs can also measure how the characteristic
impedance of a line varies along its length.
(1995-12-28)
Nearby terms:
Time Complex Simulator « time division multiple access « time division multiplexing « Time Domain Reflectometer » timeout » time quantum » time-sharing
timeout definition
A period of time after which an error condition is raised if
some event has not occured. A common example is sending a
message. If the receiver does not acknowledge the message
within some preset timeout period, a transmission error is
assumed to have occured.
(1995-11-09)
Nearby terms:
time division multiple access « time division multiplexing « Time Domain Reflectometer « timeout » time quantum » time-sharing » Time Sharing Option
time quantum definition
time slice
Nearby terms:
time division multiplexing « Time Domain Reflectometer « timeout « time quantum » time-sharing » Time Sharing Option » time shifting
time-sharing definition
<operating system> (Or "timesharing") An operating system
feature allowing several users to run several tasks
concurrently on one processor, or in parallel on many
processors, usually providing each user with his own terminal
for input and output. time-sharing is multitasking for
multiple users.
(1998-04-24)
Nearby terms:
Time Domain Reflectometer « timeout « time quantum « time-sharing » Time Sharing Option » time shifting » Time Simulator
Time Sharing Option definition
<operating system> (TSO) System software from IBM that
provides time-sharing on an IBM mainframe running in an
MVS environment.
(2003-08-15)
Nearby terms:
timeout « time quantum « time-sharing « Time Sharing Option » time shifting » Time Simulator » time sink
time shifting definition
<programming> A technique used to work around problems due to
the Year 2000 and the "millennium bug". Time shifting
involves translating date fields in a database back by a fixed
number of years to avoid year 2000 problems with the database
management system.
Typically dates are shifted back 28 years so that the occurrence
of leap years and days of the week match with the actual year.
(2003-08-15)
Nearby terms:
time quantum « time-sharing « Time Sharing Option « time shifting » Time Simulator » time sink » time slice
Time Simulator definition
<simulation> (Tsim) A stack-based simulation language.
Contact: ZOLA Technologies.
(1999-10-04)
Nearby terms:
time-sharing « Time Sharing Option « time shifting « Time Simulator » time sink » time slice » times-or-divided-by
time sink definition
(By analogy with "heat sink" or "current sink") A project that
consumes unbounded amounts of time.
[Jargon File]
(1995-02-07)
Nearby terms:
Time Sharing Option « time shifting « Time Simulator « time sink » time slice » times-or-divided-by » time T
time slice definition
<operating system> (Or "time quantum", "quantum") The period
of time for which a process is allowed to run uninterrupted in
a pre-emptive multitasking operating system.
The scheduler is run once every time slice to choose the
next process to run. If the time slice is too short then the
scheduler will consume too much processing time but if it is
too long then processes may not be able to respond to external
events quickly enough.
(1998-11-06)
Nearby terms:
time shifting « Time Simulator « time sink « time slice » times-or-divided-by » time T » Time to Live
times-or-divided-by definition
(By analogy with "plus-or-minus") A term occasionally used
when describing the uncertainty associated with a scheduling
estimate, for either humorous or brutally honest effect. For
a software project, the scheduling uncertainty factor is
usually at least 2.
[Jargon File]
(1995-02-07)
Nearby terms:
Time Simulator « time sink « time slice « times-or-divided-by » time T » Time to Live » time zone
time T definition
/ti:m T/ An unspecified but usually well-understood time,
often used in conjunction with a later time T+1. "We'll meet
on campus at time T or at Louie's at time T+1" means, in the
context of going out for dinner: "We can meet on campus and go
to Louie's, or we can meet at Louie's itself a bit later."
(Louie's was a Chinese restaurant in Palo Alto that was a
favourite with hackers.) Had the number 30 been used instead
of the number 1, it would have implied that the travel time
from campus to Louie's is 30 minutes; whatever time T is (and
that hasn't been decided on yet), you can meet half an hour
later at Louie's than you could on campus and end up eating at
the same time.
See also since time T equals minus infinity.
[Jargon File]
(1994-12-12)
Nearby terms:
time sink « time slice « times-or-divided-by « time T » Time to Live » time zone » TINC
Time to Live definition
(TTL) A field in the Internet Protocol header which
indicates how many more hops this packet should be allowed
to make before being discarded or returned.
(1994-12-12)
Nearby terms:
time slice « times-or-divided-by « time T « Time to Live » time zone » TINC » Tinman
time zone definition
One of approximately 24 longitudinal divisions of the globe,
nominally 15 degrees wide, in which clocks show the same time.
Some zones follow the boundaries of states or territories,
others differ from neighbouring zones by more or less than one
hour.
Computers can be programmed to take into account the time zone
each user is working in, which is not necessarily the same as
the zone the computer is in.
See also TZ.
(1997-07-20)
Nearby terms:
times-or-divided-by « time T « Time to Live « time zone » TINC » Tinman » tinman+
TINC definition
There Is No Cabal
Nearby terms:
time T « Time to Live « time zone « TINC » Tinman » tinman+ » TINT
Tinman definition
<language> The third of the series of DoD requirements that
led to Ada. Written by HOLWG, DoD, Jan 1976.
See Strawman, Woodenman, Ironman, Steelman.
(1976-01-01)
Nearby terms:
Time to Live « time zone « TINC « Tinman » tinman+ » TINT » tint
tinman+ definition
Macro language for Apple II? Published in DDJ?
Nearby terms:
time zone « TINC « Tinman « tinman+ » TINT » tint » Tiny
TINT definition
Interpreted version of JOVIAL.
[Sammet 1969, p. 528].
Nearby terms:
TINC « Tinman « tinman+ « TINT » tint » Tiny » Tiny BASIC
tint definition
hue
Nearby terms:
Tinman « tinman+ « TINT « tint » Tiny » Tiny BASIC » Tiny Basic Interpreter Language
Tiny definition
1. A language which provides concurrency through
message-passing to named message queues.
2. A tool written by Michael Wolfe <mwolfe@cse.ogi.edu> at
Oregon Graduate Institute of Science & Technology for
examining array data dependence algorithms and program
transformations for scientific computations.
Extended Tiny was used to implement the Omega test.
Michael Wolfe has also made extensions to his version of tiny.
(1994-12-12)
Nearby terms:
tinman+ « TINT « tint « Tiny » Tiny BASIC » Tiny Basic Interpreter Language » Tiny Clos
Tiny BASIC definition
<language> A dialect of BASIC developed by Dr. Wang [Wong?]
in the late 1970s. Tiny BASIC was 2K bytes in size and was
loaded from paper tape. It ran on almost any Intel 8080
or Zilog Z80 microprocessor for which the user could
provide the necessary I/O driver software.
Tiny BASIC was distributed as [the first ever?] freeware.
The program listing contained the following phrases "All
Wrongs reserved" and "CopyLeft", he obviously wasn't
interested in money.
See also Tiny Basic Interpreter Language.
[More info?]
(1997-09-12)
Nearby terms:
TINT « tint « Tiny « Tiny BASIC » Tiny Basic Interpreter Language » Tiny Clos » TIP
Tiny Basic Interpreter Language definition
<language> (TBIL) The inner interpreter of Tom Pittman's set
of Tiny Basics in Dr Dobb's Journal.
(1997-09-12)
Nearby terms:
tint « Tiny « Tiny BASIC « Tiny Basic Interpreter Language » Tiny Clos » TIP » TIPL
Tiny Clos definition
A core part of Common Lisp Object System (CLOS) ported to
Scheme and rebuilt using a MOP (Metaobject Protocol).
This should be interesting to those who want to use MOPs
without using a full Common Lisp or Dylan.
The first release works with MIT Scheme 11.74.
ftp://parcftp.xerox.com/pub/mops/. E-mail: Gregor
Kiczales <gregor@parc.xerox.com>. Mailing list: mops
(administered by <gregor@parc.xerox.com>).
(1992-12-14)
Nearby terms:
Tiny « Tiny BASIC « Tiny Basic Interpreter Language « Tiny Clos » TIP » TIPL » tip of the ice-cube
TIP definition
1. Texas Instruments Pascal.
2. A Unix program for interactive communication via serial
lines.
Unix manual page: tip(1).
Nearby terms:
Tiny BASIC « Tiny Basic Interpreter Language « Tiny Clos « TIP » TIPL » tip of the ice-cube » tired iron
TIPL definition
1. Teach IPL. An interpretive IPL teaching system.
[Sammet 1969, p. 393].
2. A dialect of IGL.
Nearby terms:
Tiny Basic Interpreter Language « Tiny Clos « TIP « TIPL » tip of the ice-cube » tired iron » tits on a keyboard
tip of the ice-cube definition
[IBM] The visible part of something small and insignificant.
Used as an ironic comment in situations where "tip of the
iceberg" might be appropriate if the subject were at all
important.
[Jargon File]
Nearby terms:
Tiny Clos « TIP « TIPL « tip of the ice-cube » tired iron » tits on a keyboard » tj
tired iron definition
[IBM] Hardware that is perfectly functional but far enough
behind the state of the art to have been superseded by new
products, presumably with sufficient improvement in
bang-per-buck that the old stuff is starting to look a bit
like a dinosaur.
Nearby terms:
TIP « TIPL « tip of the ice-cube « tired iron » tits on a keyboard » tj » Tk
tits on a keyboard definition
<jargon> Small bumps on certain keycaps to help touch-typists
find the home keys (ASDF and JKL;) without looking. They are
nearly always on the "F" and "J" of a QWERTY and the "5" of
a numeric keypad. The Macintosh, perverse as usual, has
them on the "D" and "K" keys.
This term is based on the vernacular American expression "as
useful as tits on a boar" (or boar-hog, bull, bullfrog, or
many other variants), meaning "not useful".
[Jargon File]
(1998-02-25)
Nearby terms:
TIPL « tip of the ice-cube « tired iron « tits on a keyboard » tj » Tk » tk
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