0%

24-letter words containing s, e, l, c

  • cooperative multitasking — (parallel, operating system)   A form of multitasking where it is the responsibility of the currently running task to give up the processor to allow other tasks to run. This contrasts with pre-emptive multitasking where the task scheduler periodically suspends the running task and restarts another. Cooperative multitasking requires the programmer to place calls at suitable points in his code to allow his task to be descheduled which is not always easy if there is no obvious top-level main loop or some routines run for a long time. If a task does not allow itself to be descheduled all other tasks on the system will appear to "freeze" and will not respond to user action. The advantage of cooperative multitasking is that the programmer knows where the program will be descheduled and can make sure that this will not cause unwanted interaction with other processes. Under pre-emptive multitasking, the scheduler must ensure that sufficient state for each process is saved and restored that they will not interfere. Thus cooperative multitasking can have lower overheads than pre-emptive multitasking because of the greater control it offers over when a task may be descheduled. Cooperative multitasking is used in RISC OS, Microsoft Windows and Macintosh System 7.
  • correspondence principle — the principle that the laws of quantum mechanics and of any new theory that may be developed reduce to the laws of Newtonian mechanics and electromagnetic theory when applied to systems in which Planck's constant can be regarded as negligible, wavelengths are comparatively small, dimensions are relatively large, etc.
  • cost-of-living allowance — an additional payment which takes account of the cost of living
  • council of nationalities — the legislature of the former Soviet Union and its successor states, consisting of an upper house (Soviet of the Union or Council of the Union) whose delegates are elected on the basis of population, and a lower house (Soviet of Nationalities or Council of Nationalities) whose delegates are elected to represent the various nationalities.
  • cross/step over the line — If you say that someone has crossed the line or has stepped over the line, you mean that they have behaved in a way that is considered unacceptable.
  • curiosity killed the cat — You say 'Curiosity killed the cat' in order to tell someone that they should not try to find out about something which does not concern them.
  • data structures language — (language)   A dialect of MAD with extensions for lists and graphics, on Philco 212.
  • decentralized processing — the use of word processing or data processing units in stand-alone or localized situations
  • definite relative clause — a relative clause with a definite relative pronoun as subordinating word, as that they said in We heard the things that they said.
  • delayed control-transfer — (architecture)   A technique used on the SPARC processor to reduce the effect of pipeline breaks by executing the instruction after a branch instruction (the "delay instruction" in the "delay slot"). If there is no useful instruction which can be placed in the delay slot then the "annul bit" on the control transfer instruction can be set, preventing execution of the delay instruction (unless the control transfer is conditional and is taken). Annulled branches are indicated in SPARC assembler language by appending ",A" to the operation code. For example, LOOP: ... CMP %L0,10 BLE,A LOOP ADD %L2, %L3, #L4 If the delay instruction is also a control transfer instruction then it gets more complicated. Both control transfer instructions are executed (but not the following instruction) and, assuming they are both taken, control is transferred briefly to the destination of the first and then immediately to the destination of the second.
  • descriptive bibliography — the aspect of bibliography concerned with the close physical study and description of books and other works.
  • destructive distillation — the decomposition of a complex substance, such as wood or coal, by heating it in the absence of air and collecting the volatile products
  • developmental psychology — a branch of psychology that studies changes in human behavior from early life to death.
  • differential association — a theory that criminal and deviant behavior is learned through close and frequent association with criminal or deviant behavior patterns, norms, and values.
  • digital compact cassette — a magnetic tape cassette on which sound can be recorded in a digital format
  • digital switched network — (communications)   (DSN) The completely digital version of the PSTN.
  • diphenylaminechlorarsine — adamsite.
  • display screen equipment — Visual Display Unit
  • domain-specific language — (language)   A machine-processable language whose terms are derived from a domain model and that is used for the definition of components or software architectures supporting that domain. A domain-specific language is often used as input to an application generator.
  • domestic relations court — in some states, a court with jurisdiction over matters involving relations within the family or household, as between husband and wife or parent and child
  • domestic science college — a school or an institution providing specialized tuition in domestic science
  • domestic-relations court — court of domestic relations.
  • double overhead camshaft — a pair of overhead camshafts, one to operate the intake valves and the other to operate the exhaust valves. Abbreviation: DOHC.
  • double-crested cormorant — a North American cormorant, Phalacrocorax auritus, having tufts of black and white feathers on the sides of the head.
  • ecole normale superieure — (body)   (ENS) A higher education and research institution in Paris, France.
  • edetate calcium disodium — a chelating agent, C 10 H 12 CaN 2 Na 2 O 8 , used in medicine to treat lead poisoning.
  • educational psychologist — a person trained in educational psychology
  • electromagnetic spectrum — the complete range of electromagnetic radiation from the longest radio waves (wavelength 105 metres) to the shortest gamma radiation (wavelength 10–13 metre)
  • electronic point of sale — a computerized system for recording sales in retail shops, using a laser scanner at the cash till to read bar codes on the packages of the items sold
  • emotional roller coaster — a situation or experience that alternates between making you feel excited, exhilarated, or happy and making you feel sad, disappointed, or desperate
  • endotracheal anaesthesia — a method of administering gaseous anaesthetics to animals through a tube inserted into the trachea
  • explicit type conversion — (programming)   (Or "cast" in C and elsewhere). A programming construct (syntax) to specify that an expression's value should be converted to a different type. For example, in C, to convert an integer (usually 32 bits) to a char (usually 8 bits) we might write: int i = 42; char *p = &buf; *p = (char) i; The expression "(char)" (called a "cast") converts i's value to char type. Casts (including this one) are often not strictly necessary, due to automatic coercions performed by the compiler, but can be used to make the conversion obvious and to avoid warning messages.
  • face as long as a fiddle — a dismal or gloomy facial expression
  • failure-directed testing — (programming)   (Or "heuristics testing") Software testing based on the knowledge of the types of errors made in the past that are likely for the system under test.
  • family income supplement — a benefit formerly paid to low-income families
  • federal power commission — FPC.
  • federal reserve district — the district served by a certain Federal Reserve Bank.
  • federal trade commission — FTC.
  • ferdinand lewis alcindor — (Ferdinand) Lew(is, Jr.) original name of Abdul-Jabbar.
  • fight like kilkenny cats — to fight until both parties are destroyed
  • floating-point specratio — SPECfp92
  • footloose and fancy-free — If you describe someone as footloose and fancy-free, you mean that they are not married or in a similar relationship, and you therefore consider them to have very few responsibilities or commitments.
  • functional specification — (programming, project)   A description of what a system (e.g. a piece of software) does or should do (but not how it should do it). The functional specification is one of the inputs to the design process. See IEEE/ANSI Std. 610.12-1990.
  • geographical determinism — the theory that human activity is determined by geographical conditions
  • glasgow haskell compiler — (language)   (GHC) A Haskell 1.2 compiler written in Haskell by the AQUA project at Glasgow University, headed by Simon Peyton Jones <[email protected]> throughout the 1990's [started?]. GHC can generate either C or native code for SPARC, DEC Alpha and other platforms. It can take advantage of features of gcc such as global register variables and has an extensive set of optimisations. GHC features an extensible I/O system based on a "monad", in-line C code, fully fledged unboxed data types, incrementally-updatable arrays, mutable reference types, generational garbage collector, concurrent threads. Time and space profiling is also supported. It requires GNU gcc 2.1+ and Perl. GHC runs on Sun-4, DEC Alpha, Sun-3, NeXT, DECstation, HP-PA and SGI. E-mail: <[email protected]>.
  • glycogen storage disease — any of several inherited disorders of glycogen metabolism that result in excess accumulation of glycogen in various organs of the body.
  • graphical user interface — a software interface designed to standardize and simplify the use of computer programs, as by using a mouse to manipulate text and images on a display screen featuring icons, windows, and menus.
  • great crested flycatcher — a North American flycatcher, Myiarchus crinitus, noted for its use of the castoff skins of snakes in building its nest.
  • grin like a cheshire cat — a constantly grinning cat in Lewis Carroll's Alice's Adventures in Wonderland.
  • hierarchical file system — (file system)   A file system in which the files are organised into a hierarchy. The nodes of the hierarchy are called directories while the leaves are the files themselves. See also root directory. Compare flat file system.
Was this page helpful?
Yes No
Thank you for your feedback! Tell your friends about this page
Tell us why?