21-letter words containing c, h, r, i, s, m
- advanced risc machine — (processor) (ARM, Originally Acorn RISC Machine). A series of low-cost, power-efficient 32-bit RISC microprocessors for embedded control, computing, digital signal processing, games, consumer multimedia and portable applications. It was the first commercial RISC microprocessor (or was the MIPS R2000?) and was licensed for production by Asahi Kasei Microsystems, Cirrus Logic, GEC Plessey Semiconductors, Samsung, Sharp, Texas Instruments and VLSI Technology. The ARM has a small and highly orthogonal instruction set, as do most RISC processors. Every instruction includes a four-bit code which specifies a condition (of the processor status register) which must be satisfied for the instruction to be executed. Unconditional execution is specified with a condition "true". Instructions are split into load and store which access memory and arithmetic and logic instructions which work on registers (two source and one destination). The ARM has 27 registers of which 16 are accessible in any particular processor mode. R15 combines the program counter and processor status byte, the other registers are general purpose except that R14 holds the return address after a subroutine call and R13 is conventionally used as a stack pointer. There are four processor modes: user, interrupt (with a private copy of R13 and R14), fast interrupt (private copies of R8 to R14) and supervisor (private copies of R13 and R14). The ALU includes a 32-bit barrel-shifter allowing, e.g., a single-cycle shift and add. The first ARM processor, the ARM1 was a prototype which was never released. The ARM2 was originally called the Acorn RISC Machine. It was designed by Acorn Computers Ltd. and used in the original Archimedes, their successor to the BBC Micro and BBC Master series which were based on the eight-bit 6502 microprocessor. It was clocked at 8 MHz giving an average performance of 4 - 4.7 MIPS. Development of the ARM family was then continued by a new company, Advanced RISC Machines Ltd. The ARM3 added a fully-associative on-chip cache and some support for multiprocessing. This was followed by the ARM600 chip which was an ARM6 processor core with a 4-kilobyte 64-way set-associative cache, an MMU based on the MEMC2 chip, a write buffer (8 words?) and a coprocessor interface. The ARM7 processor core uses half the power of the ARM6 and takes around half the die size. In a full processor design (ARM700 chip) it should provide 50% to 100% more performance. In July 1994 VLSI Technology, Inc. released the ARM710 processor chip. An ARM800 chip is also planned.
- afro-american english — Black English (def 1).
- algorithm description — (language) (ALDES) ["The Algorithm Description Language ALDES", R.G.K. Loos, SIGSAM Bull 14(1):15-39 (Jan 1976)].
- alpha centauri system — a star system comprising the binary star Alpha Centauri A and B and Proxima Centauri (also called Alpha Centauri C), which is 0.1 light years closer to the sun. Visual magnitude: 0.01 (A), 1.33 (B); spectral type: G2V (A); distance from earth: 4.3 light years
- american saddle horse — one of a breed of horses, raised originally in the U.S., that have high-stepping gaits and are bred to the three-gaited or five-gaited type.
- amicus humani generis — a philanthropist.
- apothecaries' measure — a system of liquid volume measure used in pharmacy in which 60 minims equal 1 fluid drachm, 8 fluid drachms equal 1 fluid ounce, and 20 fluid ounces equal 1 pint
- archimedes' principle — a law of physics stating that the apparent upward force (buoyancy) of a body immersed in a fluid is equal to the weight of the displaced fluid
- astronomical twilight — the period of time during which the sun is 18° below the horizon
- atmospheric inversion — inversion (def 12).
- atmospheric-inversion — an act or instance of inverting.
- british north america — (formerly) Canada or its constituent regions or provinces that formed part of the British Empire
- category merchandiser — A category merchandiser is a person whose job is to maintain stocks, manage displays and promote sales of a certain product category such as footwear.
- charity commissioners — (in Britain) members of a commission constituted to keep a register of charities and control charitable trusts
- chequebook journalism — Chequebook journalism is the practice of paying people large sums of money for information about crimes or famous people in order to get material for newspaper articles.
- chief master sergeant — a solider of the highest enlisted rank in the US Air Force
- chinese forget-me-not — an eastern Asian plant, Cynoglossum amabile, of the borage family, having lance-shaped leaves and clustered, showy, blue, pink, or white flowers.
- chink in one's armour — a small but fatal weakness
- christmas decorations — decorations of different kinds appropriate to Christmas, such as tinsel, candles, images of angels, etc.
- christmas tree packet — (networking) (Or kamikaze packet) A packet with every single option set for whatever protocol is in use. The term doubtless derives from a fanciful image of each little option bit being represented by a different-coloured light bulb, all turned on. 10 points for correctly being able to process a "Kamikaze" packet (AKA nastygram, Christmas tree packet, lamp test segment, et al.). That is, correctly handle a segment with the maximum combination of features at once (e.g. a SYN URG PUSH FIN segment with options and data). Compare: Chernobyl packet.
- civil rights movement — campaign for human freedoms
- class-relation method — (programming) A design technique based on the concepts of object-oriented programming and the Entity-Relationship model from the French company Softeam.
- comfortably-furnished — containing comfortable furniture
- completing the square — a method, usually of solving quadratic equations, by which a quadratic expression, as x 2 − 4 x + 3, is written as the sum or difference of a perfect square and a constant, x 2 − 4 x + 4 + 3 − 4 = (x − 2) 2 − 1, by addition and subtraction of appropriate constant terms.
- consummatory behavior — a behavior pattern that occurs in response to a stimulus and that achieves the satisfaction of a specific drive, as the eating of captured prey by a hungry predator (distinguished from appetitive behavior).
- cosmological redshift — the part of the redshift of celestial objects resulting from the expansion of the universe.
- crool someone's pitch — to spoil an opportunity for someone
- dacryocystorhinostomy — A surgical procedure to restore the flow of tears into the nose from the lacrimal sac when the nasolacrimal duct does not function.
- decompression chamber — a chamber in which the pressure of air can be varied slowly for returning people from abnormal pressures to atmospheric pressure without inducing decompression sickness
- diapason normal pitch — a standard of pitch in which A above middle C is established at 435 vibrations per second.
- embarras de richesses — a superfluous abundance of options, from which one finds it difficult to select
- fuming sulphuric acid — a mixture of pyrosulphuric acid, H2S2O7, and other condensed acids, made by dissolving sulphur trioxide in concentrated sulphuric acid
- gastrohepatic omentum — lesser omentum.
- get-rich-quick scheme — a scheme that promises to make a person extremely wealthy over a short period of time, often at with little effort and at no risk
- highest common factor — greatest common divisor. Abbreviation: H.C.F.
- hindu-arabic numerals — Arabic numeral.
- homolosine projection — an equal-area projection of the world, distorting ocean areas in order to minimize the distortion of the continents.
- human rights activist — a person who campaigns for human rights
- hypercholesterolaemia — the condition of having a high concentration of cholesterol in the blood
- immunoelectrophoresis — a technique for the separation and identification of mixtures of proteins, consisting of electrophoresis followed by immunodiffusion.
- in the course of time — eventually
- irish republican army — an underground Irish nationalist organization founded to work for Irish independence from Great Britain: declared illegal by the Irish government in 1936, but continues activity aimed at the unification of the Republic of Ireland and Northern Ireland. Abbreviation: IRA, I.R.A.
- joseph-marie jacquard — (person) /zhoh-zef' mah-ree' zhah-kar'/ (1752-07-07 to 1834-08-07) The inventor of the Jacquard loom.
- law of thermodynamics — any of three principles variously stated in equivalent forms, being the principle that the change of energy of a thermodynamic system is equal to the heat transferred minus the work done (first law of thermodynamics) the principle that no cyclic process is possible in which heat is absorbed from a reservoir at a single temperature and converted completely into mechanical work (second law of thermodynamics) and the principle that it is impossible to reduce the temperature of a system to absolute zero in a finite number of operations (third law of thermodynamics)
- main-topsail schooner — a two-masted or three-masted schooner having square topsails on the foremast and mainmast: a jackass brig or jackass bark.
- mechanical instrument — a musical instrument, such as a barrel organ or music box, that plays a preselected piece of music by mechanical means
- mechanical solidarity — social cohesiveness that is based on shared activities, beliefs, and experiences and is characteristic of simple traditional societies.
- minister of the crown — any Government minister of cabinet rank
- modern apprenticeship — an arrangement that allows a school leaver to gain vocational qualifications while being trained in a job
- motivational research — the application of the knowledge and techniques of the social sciences, especially psychology and sociology, to understanding consumer attitudes and behavior: used as a guide in advertising and marketing.
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