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1. WordNet® 3.0 (2006) |
DDT
n 1: an insecticide that is also toxic to animals and humans;
banned in the United States since 1972 [syn:
dichlorodiphenyltrichloroethane, DDT]
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2. V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016) |
DDT
Dynamic Debugging Tool (DEC, CP/M)
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3. The Jargon File (version 4.4.7, 29 Dec 2003) |
DDT
/D?D?T/, n.
[from the insecticide para-dichloro-diphenyl-trichloroethene]
1. Generic term for a program that assists in debugging other programs by
showing individual machine instructions in a readable symbolic form and
letting the user change them. In this sense the term DDT is now archaic,
having been widely displaced by debugger or names of individual programs
like adb, sdb, dbx, or gdb.
2. [ITS] Under MIT's fabled ITS operating system, DDT (running under the
alias HACTRN, a six-letterism for ?Hack Translator?) was also used as the
shell or top level command language used to execute other programs.
3. Any one of several specific DDTs (sense 1) supported on early DEC
hardware and CP/M. The PDP-10 Reference Handbook (1969) contained a
footnote on the first page of the documentation for DDT that illuminates
the origin of the term:
Historical footnote: DDT was developed at MIT for the PDP-1 computer in
1961. At that time DDT stood for ?DEC Debugging Tape?. Since then, the
idea of an on-line debugging program has propagated throughout the
computer industry. DDT programs are now available for all DEC
computers. Since media other than tape are now frequently used, the
more descriptive name ?Dynamic Debugging Technique? has been adopted,
retaining the DDT abbreviation. Confusion between DDT-10 and another
well known pesticide, dichloro-diphenyl-trichloroethane C[14]H[9]Cl[5]
should be minimal since each attacks a different, and apparently
mutually exclusive, class of bugs.
(The ?tape? referred to was, incidentally, not magnetic but paper.) Sadly,
this quotation was removed from later editions of the handbook after the
suits took over and DEC became much more ?businesslike?.
The history above is known to many old-time hackers. But there's more:
Peter Samson, compiler of the original TMRC lexicon, reports that he
named DDT after a similar tool on the TX-0 computer, the direct ancestor of
the PDP-1 built at MIT's Lincoln Lab in 1957. The debugger on that
ground-breaking machine rejoiced in the name FLIT (FLexowriter
Interrogation Tape). Flit was for many years the trade-name of a popular
insecticide.
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4. The Free On-line Dictionary of Computing (30 December 2018) |
DDT
1. Generic term for a program that assists in debugging other
programs by showing individual machine instructions in a
readable symbolic form and letting the user change them. In
this sense the term DDT is now archaic, having been widely
displaced by "debugger" or names of individual programs like
"adb", "sdb", "dbx", or "gdb".
2. Under MIT's fabled ITS operating system, DDT (running
under the alias HACTRN) was also used as the shell or top
level command language used to execute other programs.
3. Any one of several specific debuggers supported on early
DEC hardware. The DEC PDP-10 Reference Handbook (1969)
contained a footnote on the first page of the documentation
for DDT that illuminates the origin of the term:
Historical footnote: DDT was developed at MIT for the
PDP-1 computer in 1961. At that time DDT stood for "DEC
Debugging Tape". Since then, the idea of an on-line debugging
program has propagated throughout the computer industry. DDT
programs are now available for all DEC computers. Since media
other than tape are now frequently used, the more descriptive
name "Dynamic Debugging Technique" has been adopted, retaining
the DDT abbreviation. Confusion between DDT-10 and another
well known pesticide, dichloro-diphenyl-trichloroethane
(C14-H9-Cl5) should be minimal since each attacks a different,
and apparently mutually exclusive, class of bugs.
(The "tape" referred to was, incidentally, not magnetic but
paper.) Sadly, this quotation was removed from later editions
of the handbook after the suits took over and DEC became
much more "businesslike".
The history above is known to many old-time hackers. But
there's more: Peter Samson, compiler of the original TMRC
lexicon, reports that he named "DDT" after a similar tool on
the TX-0 computer, the direct ancestor of the PDP-1 built at
MIT's Lincoln Lab in 1957. The debugger on that
ground-breaking machine (the first transistorised computer)
rejoiced in the name FLIT (FLexowriter Interrogation Tape).
[Jargon File]
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Thesaurus Results for DDT:
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1. Moby Thesaurus II by Grady Ward, 1.0 |
DDD, Paris green, antimony, arsenic, arsenic trioxide, beryllium, bichloride of mercury, cadmium, carbolic acid, carbon monoxide, carbon tetrachloride, chlorine, cyanide, hydrocyanic acid, hyoscyamine, lead, mercuric chloride, mercury, mustard gas, nicotine, phenol, poison gas, prussic acid, selenium, strychnine |
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Common Misspellings > |
DDT DDDT DDDT DT DDDT DTD DDTD DT DDDT DTDT DD DDTT wDT dwDT wdDT eDT deDT edDT rDT drDT rdDT sDT dsDT sdDT fDT dfDT fdDT xDT dxDT xdDT cDT dcDT cdDT vDT dvDT vdDT DT d DT dDT DwT DdwT DwdT DeT DdeT DedT DrT DdrT DrdT DsT DdsT DsdT DfT DdfT DfdT DxT DdxT DxdT DcT DdcT DcdT DvT DdvT DvdT D T Dd T D dT DD5 DDt5 DD5t DD% DDt% DD%t DD6 DDt6 DD6t DDr DDtr DDrt DDy DDty DDyt DDf DDtf DDft DDg DDtg DDgt DDh DDth DDht Definition commonly spelled as: Defanition or Defenition, Synonym as: Synonim, Sinonym or Sinonim, Thesaurus as: Thesorus or Thesauris, Dictionary as: Dictionery or Dictionry and Define is usually not misspelled. What does mispell meen? It Meens...
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