Definition of Ddt

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]

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-1computer in 1961. At that time DDT stood for "DEC DebuggingTape". Since then, the idea of an on-line debugging program haspropagated throughout the computer industry. DDT programs are nowavailable for all DEC computers. Since media other than tape arenow frequently used, the more descriptive name "Dynamic DebuggingTechnique" has been adopted, retaining the DDT abbreviation. Confusionbetween DDT-10 and another well known pesticide,dichloro-diphenyl-trichloroethane(C14-H9-Cl5)should be minimal since each attacks adifferent, 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 transistorized computer) rejoiced in the name FLIT (FLexowriter Interrogation Tape).

DDT
Neurological Data for Statistical Analysis

DDT
Dynamic Debugging Tool

1052/tcp
{ddt}
Dynamic DNS Tools.

1052/udp
{ddt}
Dynamic DNS Tools.

1052/tcp
{ddt}
Dynamic DNS Tools.

1052/udp
{ddt}
Dynamic DNS Tools.

DDT

---

Noun
1. an insecticide that is also toxic to animals and humans; banned in the United States since 1972
(synonym) dichlorodiphenyltrichloroethane
(hypernym) insecticide, insect powder

ddt

---

ddt
n : an insecticide that is also toxic to animals and humans; banned in the united states since 1972 [syn: dichlorodiphenyltrichloroethane, ddt]

---

DDT
The first chlorinated hydrocarbon insecticide chemical name: Dichloro-Diphenyl-Trichloroethane. It has a half-life of 15 years and can collect in fatty tissues of certain animals. EPA banned registration and interstate sale of DDT for virtually all but emergency uses in the United States in 1972 because of its persistence in the environment and accumulation in the food chain.

DDT
The first chlorinated hydrocarbon insecticide chemical name: Dichloro-Diphenyl-Trichloroethane. It has a half-life of 15 years and can collect in fatty tissues of certain animals. EPA banned registration and interstate sale of DDT for virtually all but emergency uses in the United States in 1972 because of its persistence in the environment and accumulation in the food chain.

DDT (DICHLORODIPHENYLTRICHLOROETHANE)
A colorless odorless water-insoluble crystalline insecticide C14H9Cl5 that tends to accumulate in ecosystems and has toxic effects on many vertebrates. DDT was used extensively prior to 1972 at which time the U.S. Environmental Protection Agency (EPA) banned its production and distribution. Although banned from usage for a number of years, the inert nature of such toxic chemicals and their low biodegradability (15-year half-life) allow them to exist in soils, river sediment, and plants and animals for many years.

DDT
Digital Data Transmitter

DDT
dichloro-diphenyltrichloroethane

DDT
Dillards Inc
Exchange: NYSE
Not Available

DDT

See more at Wikipedia.org...