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Computer processor which works on arrays of several numbers at once
In computing, a vector processor is a central processing unit (CPU) that implements an instruction set where its instructions are designed to operate efficiently
Vector_processor
Open-source network switching framework
Vector packet processing — The Vector Packet Processor 20.01 documentation". fd.io. Retrieved 2020-08-12. "[Guide] Intro to Vector Packet Processing (VPP)"
Vector_Packet_Processing
Quickly accessible working storage available as part of a digital processor
A processor register is a quickly accessible storage location available to a computer's processor. Registers usually consist of a small amount of fast
Processor_register
Specialized electronic circuit that accelerates graphics
the Geometry Engine, a VLSI vector processor ASIC designed by Jim Clark and Marc Hannah at Stanford University. This processor is the forerunner of modern
Graphics_processing_unit
Class of computer processors
processor is classified as a single instruction, single data (SISD) processor in Flynn's taxonomy. The Intel 486 is an example of a scalar processor.
Scalar_processor
CPU that implements instruction-level parallelism within a single processor
processor (or multiple-issue processor) is a CPU that implements a form of parallelism called instruction-level parallelism within a single processor
Superscalar_processor
Mainframe computer from DEC
'without' the vector processor. The vector processor was referred to as the V-box, and it was Digital's first ECL implementation of the VAX Vector Architecture
VAX_9000
Multi-core microprocessor microarchitecture
the Cell processor can be split into four components: external input and output structures, the main processor called the Power Processing Element (PPE)
Cell_(processor)
Programming paradigm in which many processes are executed simultaneously
is the processor frequency (cycles per second). Increases in frequency increase the amount of power used in a processor. Increasing processor power consumption
Parallel_computing
Instructions for the x86 microprocessors
Knights Landing co-processor, which shipped in 2016. In conventional processors, AVX-512 was introduced with Skylake server and HEDT processors in 2017. AVX
Advanced_Vector_Extensions
In computing, chaining is a technique used in vector processors in which vector registers generate interim results which can be used immediately, without
Chaining_(vector_processing)
Type of parallel processing
the use of SIMD-capable instructions. A later processor that used vector processing is the Cell processor used in the PlayStation 3, which was developed
Single instruction, multiple data
Single_instruction,_multiple_data
Multi-core processor with a large number of cores
Coherent Logix hx3100 Processor, a 100-core DSP/GPP processor based on HyperX Architecture Movidius Myriad 2, a manycore vision processing unit (VPU) Kalray
Manycore_processor
Central computer component that executes instructions
A central processing unit (CPU), also known as a central processor, main processor, or simply processor, is the primary processor in a given computer
Central_processing_unit
Research institute in high-performance computing
facilitate user access to its services. This strategy was centred on the SX vector processor architecture of NEC. The IBM SP4, installed 2002, was the first production
Swiss National Supercomputing Centre
Swiss_National_Supercomputing_Centre
Central processing unit by Sony Computer Entertainment and Toshiba
units are: a CPU core, two Vector Processing Units (VPU), a 10-channel DMA unit, a memory controller, and an Image Processing Unit (IPU). There are three
Emotion_Engine
FR-V (Fujitsu RISC-VLIW) is a processor able to process both a very long instruction word (VLIW) and vector processor instructions at the same time,
FR-V_(microprocessor)
Type of data structure
one-dimensional array of words, whose indices are their addresses. Processors, especially vector processors, are often optimized for array operations. Arrays are useful
Array_(data_structure)
Type of database that uses vectors to represent other data
A vector database, vector store or vector search engine is a database that stores and retrieves embeddings of data in vector space. Vector databases typically
Vector_database
Classification of computer architectures
and explicit timing delays to synchronize data flow from processor to processor. Each processor in a systolic system executes an invariant sequence of instructions
Duncan's_taxonomy
Open-source CPU instruction set architecture
general-purpose mixed-precision vector processor, suitable to execute compute kernels. Code would port easily to CPUs with differing vector lengths, ideally without
RISC-V
Supercomputer by Cray Research
The Cray C90 series (initially named the Y-MP C90) was a vector processor supercomputer launched by Cray Research in 1991. The C90 was a development of
Cray_C90
Case in parallel computing
result in vector code where applicable, much like manual use of intrinsics or vector datatypes. Chaining (vector processing) Vector processor Auto-vectorization
Automatic_vectorization
(Virtual Vector Architecture) is a technology from IBM for coupling together multiple scalar floating point units to act as a single vector processor. Certain
IBM_ViVA
high-performance workstation type machines, while Ardent developed a custom vector processor that allowed it to compete with large supercomputers for graphics-related
Stardent_Inc.
Applying operations to whole sets of values simultaneously
arrays can be called a vectorized operation, regardless of whether it is executed on a vector processor, which implements vector instructions. Array programming
Array_programming
the previous generations. It was a parallel vector processor and supported one to four vector processors. In 1994, the S-3000 family was complemented
HITAC_S-3000
VLSI chip
Geometry Engine is an early very large scale integrated circuit (VLSI) vector processor designed for 3D computer graphics by Jim Clark and Marc Hannah at Stanford
Geometry_Engine
Form of conditionals in computer programming
compiler Pipeline stall Software pipelining Speculative execution Vector processor Very long instruction word Rick Vinyard (2000-04-26). "Predication"
Predication (computer architecture)
Predication_(computer_architecture)
Computer processor
The NEC SX-Aurora TSUBASA is a vector processor of the NEC SX architecture family. Unlike previous SX supercomputers, the SX-Aurora TSUBASA is provided
NEC_SX-Aurora_TSUBASA
Classification of computer architectures
term for associative processor is analogous to cells of content-addressable memory each having their own processor. Such processors are very rare. broadcast_value
Flynn's_taxonomy
1974 supercomputer
Data Corporation (CDC). It was one of the first machines to use a vector processor to improve performance on appropriate scientific applications. It was
CDC_STAR-100
Address from which a CPU starts fetching instructions after a reset
typically used addresses by different microprocessors: The reset vector for the Intel 8086 processor is at physical address FFFF0h (16 bytes below 1 MB). The
Reset_vector
Timeline of early 3D graphics hardware
probably many more instances than listed. "Matrix multiplier", "vector processor", "tensor processor", "3D accelerator", "Geometry Engine", and "geometry pipeline"
Timeline of early 3D computer graphics hardware
Timeline_of_early_3D_computer_graphics_hardware
AMD neural processing unit microarchitecture
contains: A VLIW + SIMD vector processor optimized for high-throughput compute tasks and tensor operations. A scalar RISC-style processor responsible for control
AMD_XDNA
two gates per chip, was a vector processor. It introduced a number of innovations, such as chaining, in which scalar and vector registers generate interim
History_of_supercomputing
Instruction set extension by Intel
Fastest Gaming Processor?". www.techpowerup.com. 30 March 2021. ""Add rocketlake to gcc" commit". gcc.gnu.org. "Intel Celeron 6305 Processor (4M Cache, 1
AVX-512
Problem easily dividable into parallel tasks
programming Shared-nothing architecture (SN) Symmetric multiprocessing (SMP) Vector processor Herlihy, Maurice; Shavit, Nir (2012). The Art of Multiprocessor Programming
Embarrassingly_parallel
Algorithm for partial ordering of events and detecting causality in distributed systems
timestamps, inter-process messages contain the state of the sending process's logical clock. A vector clock of a system of n processes is a vector (equivalentlly
Vector_clock
Supercomputer manufactured by Cray Research
improvement over the Cray-1 was that it was a shared-memory parallel vector processor, the first such computer from Cray Research. It housed up to four CPUs
Cray_X-MP
Type of program in computer graphics
shader authoring and debugging. List of common shading algorithms Vector processor DirectCompute CUDA SPIR-V Metal (API) GPGPU "Vulkan® 1.4.323 - A Specification"
Shader
Data structure
interrupt vector table, called an interrupt vector, is the address of an interrupt handler (also known as ISR). While the concept is common across processor architectures
Interrupt_vector_table
Computer programming paradigm
function like a stream processor with appropriate software support. It consists of a controlling processor, the PPE (Power Processing Element, an IBM PowerPC)
Stream_processing
Computing technique used to achieve parallelism
This computer consisted of a master (controller processor) and SIMD processors (or vector processor mode as proposed by Flynn). In Auguin's SPMD model
Single_program,_multiple_data
Geometric object that has length and direction
physics, and engineering, a Euclidean vector or simply a vector (sometimes called a geometric vector or spatial vector) is a geometric object that has magnitude
Euclidean_vector
Supercomputer built by NEC Corporation
version of the single chip vector processor that was introduced with the SX-6. The NEC SX-8 processors run at 2 GHz for vectors and 1 GHz for scalar operations
NEC_SX-8
IBM's 64-bit instruction set architecture implemented by its mainframe computers
implementation includes two independent SIMD units to operate on vector data. The older vector processor facility first introduced from the IBM 3090 and also supported
Z/Architecture
Miniprocessor chip set
devices implemented the VAX vector processor option; these comprised the DC555 Vector Register set chip (VERSE) and the DC556 Vector Data Path chip (FAVOR)
Rigel_(microprocessor)
Apple-branded microprocessor
closely related) processor models from Freescale, a former part of Motorola. Motorola and Freescale's internal name of this family of processors is PowerPC
PowerPC_G4
Supercomputer built by NEC Corporation
single chip vector processor that was introduced with the SX-6. The NEC SX-9 processors run at 3.2 GHz, with eight-way replicated vector pipes, each having
NEC_SX-9
Topics referred to by the same term
Vector facility may refer to: Vector facility on the IBM 3090 Vector Facility for z/Architecture Vector processor This disambiguation page lists articles
Vector_facility
integer registers, and 8 32-bit address registers. The new vector processor increased vector processing speed by reducing the in-register cycle time to 42 ns
Alliant_Computer_Systems
SV1 included a vector cache. It also introduced a feature called multi-streaming, in which one processor from each of four processor boards work together
Cray_SV1
J90 series (code-named Jedi during development) was an air-cooled vector processor supercomputer first announced by Cray Research in 1994. The J90 evolved
Cray_J90
Supercomputer
Instruments (TI) between 1966 and 1973. The ASC's central processing unit (CPU) supported vector processing, a performance-enhancing technique which was key to
TI Advanced Scientific Computer
TI_Advanced_Scientific_Computer
Extension to the x86 instruction set by AMD
x86 instruction set, enabling it to perform vector processing of floating-point vector operations using vector registers. This improvement enhances the performance
3DNow!
American supercomputer manufacturer
Cray model line, the Cray SV1, was launched. This was a clustered SMP vector processor architecture, developed from J90 technology. On March 2, 2000, Cray
Cray
Series of supercomputers by NEC
SX Vector Engine (VE) is a vector processor, and each VE core has a Scalar Processing Unit (SPU) with 64 scalar registers of 64 bits, and a Vector Processing
NEC_SX
Broad concept generalizing scalars in mathematics and physics
In mathematics and physics, a vector is a generalization of a single number. It may denote a vector quantity, i.e., physical quantity that cannot be expressed
Vector (mathematics and physics)
Vector_(mathematics_and_physics)
eight vector processors, which share up to 64 GB of computer memory. The SX-6 processor is a single chip implementation containing a vector processor unit
NEC_SX-6
Algebraic structure in linear algebra
operations of vector addition and scalar multiplication must satisfy certain requirements, called vector axioms. Real vector spaces and complex vector spaces
Vector_space
Set of computers configured in a distributed computing system
massive parallelism. Unlike symmetric multi-processor systems, where scalability eventually fades as more processors are added (and thus either becomes more
Computer_cluster
Supercomputer designed by Tesla
Interface Processor cards across four host servers, and Ethernet-linked adjunct servers. It has 53,100 D1 cores. Dojo Interface Processor cards (DIP)
Tesla_Dojo
Supercomputer made starting in 2003
The Cray X1 is a non-uniform memory access, vector processor supercomputer manufactured and sold by Cray Inc. since 2003. The X1 is often described as
Cray_X1
Use of many processors to perform simultaneous operations
Connection Machine Cellular automaton CUDA framework Manycore processor Vector processor Spatial architecture Grid computing: experiment management, tool
Massively_parallel
Measure of computer performance
and performance". NEC's SX-9 supercomputer was the world's first vector processor to exceed 100 gigaFLOPS per single core. In June 2006, a new computer
Floating point operations per second
Floating_point_operations_per_second
Supercomputer manufactured by Cray Research
The Cray-1 was the first supercomputer to successfully implement the vector processor design. These systems improve the performance of math operations by
Cray-1
CPU that switches between threads of execution on every cycle
automatically generate a corresponding barrel processor design from a single-tasking processor design. An n-way barrel processor generated this way acts much like
Barrel_processor
Family of instruction set architectures
be orders of magnitude worse than on a true x86 processor. The market rejected the Itanium processor since it broke backward compatibility and preferred
X86
heart of the console's configuration is its central processing unit (CPU), a custom RISC processor known as the Emotion Engine which operates at 294.912 MHz
PlayStation 2 technical specifications
PlayStation_2_technical_specifications
Type of memory addressing
is the vector equivalent of register indirect addressing, with gather involving indexed reads, and scatter, indexed writes. Vector processors (and some
Gather/scatter (vector addressing)
Gather/scatter_(vector_addressing)
Set of methods for supervised statistical learning
In machine learning, a support vector machine (SVM) or support vector network is a supervised max-margin model with associated learning algorithms that
Support_vector_machine
point performance through multiple FPU and SIMD vector processors in each core. The SIMD vector processor (VMX128) was modified for the Xbox to include
Xbox 360 technical specifications
Xbox_360_technical_specifications
Parallel computing platform and programming model
their vector processor OptiX – ray tracing API by NVIDIA Parallel computing rCUDA – an API for computing on remote computers Stream processing SYCL –
CUDA
Message-passing system for parallel computers
rank-0 process, and some implementations also capture and funnel the output from other processes. MPI uses the notion of process rather than processor. Program
Message_Passing_Interface
Family of RISC-based computer architectures
of the era generally shared memory between the processor and the framebuffer, which allowed the processor to quickly update the contents of the screen without
ARM_architecture_family
64-bit extension of the ARM architecture
computer processor designs. It was introduced in 2011 with the ARMv8 architecture and later became part of the ARMv9 series. AArch64 allows processors to handle
AArch64
Method in natural language processing
representation is a real-valued vector that encodes the meaning of the word in such a way that the words that are closer in the vector space are expected to be
Word_embedding
Statistical model to calculate the value of multiple quantities as they change over time
Vector autoregression (VAR) is a statistical model used to capture the relationship between multiple quantities as they change over time. VAR is a type
Vector_autoregression
1985 supercomputer model
performance gap between the processor and main memory. In the era of the CDC 6600 memory ran at the same speed as the processor, and the main problem was
Cray-2
Type of instruction set architecture
example of a load–store architecture was the CDC 6600. Almost all vector processors (including many GPUs[better source needed]) use the load–store approach
Load–store_architecture
Type of parallel computing architecture of tightly coupled nodes
Carnegie Mellon University's iWarp processor, which has been manufactured by Intel. An iWarp system has a linear array processor connected by data buses going
Systolic_array
Line of mainframe computers
synchronizing the systems to ease management Vector Facility: up to one vector processor per Central Processor available on the 9021 and 9121. First used
IBM_System/390
Intel processor microarchitecture
"Desktop 4th Generation Intel Core Processor Family, Desktop Intel Pentium Processor Family, and Desktop Intel Celeron Processor Family: Specification Update
Haswell_(microarchitecture)
Use of two or more central processing units (CPUs) within one computer system
central processing units (CPUs) within one computer system. The term also refers to the ability of a system to support more than one processor or the ability
Multiprocessing
Range of mainframe-class supercomputers
semiconductor memory in this series. The central processor has no I/O instructions, relying upon the peripheral processor (PP) units to do I/O. A Cyber 170-series
CDC_Cyber
Mathematical software
BLAS (Basic Linear Algebra Subprograms) libraries for performing basic vector and matrix operations. The LINPACK benchmarks appeared initially as part
LINPACK
Nikon media processors
on a chip solution integrates an image processor in multi-core processor architecture, with each single processor-core able to compute many instructions/operations
Expeed
Use of a GPU for computations typically assigned to CPUs
Physics processing unit (PPU) Single instruction, multiple threads – Parallel computing execution model Vector processor – Computer processor which works
General-purpose computing on graphics processing units
General-purpose_computing_on_graphics_processing_units
2019 mixed reality smartglasses
Floating Vector Processor (FVP) for 3D processing >1 TOP of programmable compute 125Mb SRAM 79mm2 die size and 2 billion transistors TSMC 16FF+ process PCIe
HoloLens_2
Japanese supercomputer
scalar and vector processor, similar to the architecture of the S-810. The scalar processor is based on the Hitachi M-series mainframe processor, so is compatible
HITAC_S-820
Low-level programming language family
result in a one-to-one assembly conversion specific for the given vector processor. Real-time programs such as simulations, flight navigation systems
Assembly_language
Microprocessor development project
describing a family of 32-bit and 64-bit processors with optional floating-point arithmetic and vector processing support. The OpenRISC 1200 implementation
OpenRISC
64-bit RISC instruction set architecture
Alpha processor to feature a vector processor unit. A persistent report attributed to DEC insiders suggests the choice of the AXP tag for the processor was
DEC_Alpha
Japanese supercomputer
Hitachi's first supercomputer, although the company had previously built a vector processor, the IAP. The first system shipped was a top-end S-810/20 model, which
HITAC_S-810
Parallelization across multiple processors in parallel computing environments
development of the Solomon machine. The Solomon machine, also called a vector processor, was developed to expedite the performance of mathematical operations
Data_parallelism
American computer company
the Supertek S-1, a compact, air-cooled, CMOS clone of the Cray X-MP vector processor supercomputer running the CTSS (Cray Time Sharing System) operating
Supertek_Computers
Type of extremely powerful computer
supercomputer used 166 vector processors to gain the top spot in 1994 with a peak speed of 1.7 gigaFLOPS (GFLOPS) per processor. The Hitachi SR2201 obtained
Supercomputer
Cray XT5h supercomputer component
superseding the Cray X1 parallel vector supercomputer. However, the X2 was eventually launched as one of the four processor "blade" options for the XT5h system
Cray_X2
Computer architecture to aid parallelism
these firms. A processor that executes every instruction one after the other (i.e., a non-pipelined scalar architecture) may use processor resources inefficiently
Very_long_instruction_word
VECTOR PROCESSOR
VECTOR PROCESSOR
Boy/Male
Arthurian Legend
Father of Arthur.
Male
English
Short form of English Sylvester, VESTER means "from the forest."
Male
Arthurian
, sir Hector de Maris; (defender).
Boy/Male
Spanish American Shakespearean Greek Latin
Tenacious.
Male
Portuguese
Portuguese form of Latin Hector, HEITOR means "defend; hold fast."
Male
English
Roman Latin name VICTOR means "conqueror."Â
Boy/Male
Spanish
Victor.
Boy/Male
English American
Doctor; teacher.
Boy/Male
Christian & English(British/American/Australian)
Conqueror
Male
English
 Anglicized form of Scottish Gaelic Eachann, HECTOR means "brown horse." Compare with another form of Hector.
Surname or Lastname
Scottish
Scottish : Anglicized form of the Gaelic personal name Eachann (earlier Eachdonn, already confused with Norse Haakon), composed of the elements each ‘horse’ + donn ‘brown’.English : found in Yorkshire and Scotland, where it may derive directly from the medieval personal name. According to medieval legend, Britain derived its name from being founded by Brutus, a Trojan exile, and Hector was occasionally chosen as a personal name, as it was the name of the Trojan king’s eldest son. The classical Greek name, HektÅr, is probably an agent derivative of Greek ekhein ‘to hold back’, ‘hold in check’, hence ‘protector of the city’.German, French, and Dutch : from the personal name (see 2 above). In medieval Germany, this was a fairly popular personal name among the nobility, derived from classical literature. It is a comparatively rare surname in France.
Male
Portuguese
Galician-Portuguese form of Roman Latin Victor, VITOR means "conqueror."
Boy/Male
American, Australian, British, Chinese, Christian, Danish, Dutch, English, French, German, Greek, Italian, Latin, Portuguese, Shakespearean, Spanish
Steadfast; Anchor; Holds Fast; Star; Coined from Esther Vanhomrigh; Tenacious; Defend; Hold Fast; Coined from Esther Vanho
Boy/Male
American, British, Christian, Danish, Dutch, English, Finnish, French, German, Greek, Hindu, Indian, Irish, Jamaican, Latin, Romanian, Slovenia, Spanish, Swedish, Swiss, Tamil, Ukrainian
Victorious; Conqueror; Winner; Champion; One who Conquers; Victory
Boy/Male
Latin American Spanish
Conqueror.
Boy/Male
Australian, Basque, Czech, Czechoslovakian, Danish, Finnish, French, German, Hungarian, Latin, Polish, Slovenia, Swedish, Swiss, Ukrainian
The Conqueror; Victory; Victorious; Conquer
Male
Greek
(á¼ÎºÏ„ωÏ) Variant spelling of Greek Hektor, EKTOR means "defend; hold fast."
Male
Russian
(Cyrillic Виктор): Slavic form of Roman Latin Victor, VIKTOR means "conqueror." In use by the Bulgarians, Russians and Serbians. Compare with another form of Viktor.
Boy/Male
Christian & English(British/American/Australian)
Steadfast
Male
Scandinavian
 Scandinavian form of Roman Latin Victor, VIKTOR means "conqueror." Compare with another form of Viktor.
VECTOR PROCESSOR
VECTOR PROCESSOR
Boy/Male
British, Celtic, English, French
Privileged Birth
Girl/Female
Tamil
Kayal - name of a fish... always referred to girls beautiful eyes in ancient Tamil poems
Boy/Male
Native American
Has no shame.
Girl/Female
Bengali, Hindu, Indian, Kannada, Malayalam, Marathi, Sanskrit, Sindhi
The Name of a Flower
Girl/Female
Australian, Gaelic
Champion
Female
Hebrew
Variant spelling of Hebrew Chana, CHANNA means "favor; grace." In the bible, this is the name of the mother of Samuel and wife to Elkanah.
Boy/Male
German, Scandinavian
Ever Kingly; Son of Eric
Boy/Male
Biblical
Thy broken piece.
Boy/Male
Buddhist, Indian, Japanese
Original Silence
Surname or Lastname
English
English : occupational name for a tumbler or jester, from an agent derivative of Middle English spill(en) ‘to play, jest, or sport’ (Old English spilian).English : nickname for a destructive or wasteful person, from an agent derivative of the homonymous Middle English spill(en) ‘to spoil, waste, or squander’ (Old English spillan).German and Dutch : occupational name for a spindle maker, a variant of Spille with the addition of the agent suffix -er.In some cases a variant of German Spieler.
VECTOR PROCESSOR
VECTOR PROCESSOR
VECTOR PROCESSOR
VECTOR PROCESSOR
VECTOR PROCESSOR
n.
The turning factor of a quaternion.
a.
Pertaining to a rector or a rectory; rectoral.
v. t.
To confer a doctorate upon; to make a doctor.
n.
An African weaver bird (Textor alector).
n.
A directed quantity, as a straight line, a force, or a velocity. Vectors are said to be equal when their directions are the same their magnitudes equal. Cf. Scalar.
n.
Any mechanical contrivance intended to remedy a difficulty or serve some purpose in an exigency; as, the doctor of a calico-printing machine, which is a knife to remove superfluous coloring matter; the doctor, or auxiliary engine, called also donkey engine.
n.
A woman who wins a victory; a female victor.
n.
Same as Radius vector.
n.
A pregnant woman; a mother; as, A has a son B by one venter, and a daughter C by another venter; children by different venters.
n.
A contrivance for removing superfluous ink or coloring matter from a roller. See Doctor, 4.
a.
Of or pertaining to victory, or a victor' being a victor; bringing or causing a victory; conquering; winning; triumphant; as, a victorious general; victorious troops; a victorious day.
n.
The province of a rector; a parish church, parsonage, or spiritual living, with all its rights, tithes, and glebes.
n.
The ratio of one vector to another in length, no regard being had to the direction of the two vectors; -- so called because considered as a stretching factor in changing one vector into another. See Versor.
n.
A term made up of the two parts / + /1 /-1, where / and /1 are vectors.
n.
The chief elective officer of some universities, as in France and Scotland; sometimes, the head of a college; as, the Rector of Exeter College, or of Lincoln College, at Oxford.
v. t.
To tamper with and arrange for one's own purposes; to falsify; to adulterate; as, to doctor election returns; to doctor whisky.
n.
A belly, or protuberant part; a broad surface; as, the venter of a muscle; the venter, or anterior surface, of the scapula.
v. t.
To treat as a physician does; to apply remedies to; to repair; as, to doctor a sick man or a broken cart.
n.
A mathematical instrument, consisting of two rulers connected at one end by a joint, each arm marked with several scales, as of equal parts, chords, sines, tangents, etc., one scale of each kind on each arm, and all on lines radiating from the common center of motion. The sector is used for plotting, etc., to any scale.
n.
An astronomical instrument, the limb of which embraces a small portion only of a circle, used for measuring differences of declination too great for the compass of a micrometer. When it is used for measuring zenith distances of stars, it is called a zenith sector.