Glossary of Key Terminology Used in Printed Circuit Board. PCB Design and Manufacturing. We have a. new glossary. While the new glossary is being developed and tested, this legacy glossary is. A collection of words with their meanings. This glossary has. Vector Us Map Dots' title='Vector Us Map Dots' />PCB design and manufacturing, with rudimentary. The words have other meanings not given here. For. those, consult. English language or electronics dictionary. Recommended dictionaries. Do you need. on line definitions. A component which adds energy to the signal it passes. A device that requires an external source of power to operate. Any device that switches or amplifies by the. Examples. of active devices which fit one or more of the above definitions. ICs. Contrast with. Aluminum Nitride, a compound of aluminum with nitrogen. A ceramic used for insulators in electron tubes or substrates in. It can withstand continuously high temperatures and has a. Aluminum oxide Al. A circuit in which the output varies as a continuous function. The positive element such as the plate of a vacuum tube. In a. cathode ray tube, the electrodes connected to a source of positive. These anodes are used to concentrate and accelerate the electron beam. Graf. 1. An indexed shape with a specified x and y dimension, or. The index of the. Position. a number used in an aperture list to identify an aperture. D code. 2. A small, thin, trapezoidal piece of plastic used to limit and shape. A vector photoplotter plots images from a. A line of textual data in an. D code and position, the shape, the usage. Call Of Duty 4 Crack No Cd Tpb Bubbles. X and Y dimensions of an. Some aperture lists leave out certain of those types of data. For. example. laser photoplotters dont need to know whether an aperture is a flash. An. ASCII text. data file which describes the size and shape of the apertures used by a. Vector Us Map Dots And X' title='Vector Us Map Dots And X' />
A print out of this file. Also called aperture table. Vector Us Map DotseroAperture list. A component of a. Its center hole is attached to a motorized spindle on the lamp head. When a. D code. denoting a particular position on the wheel is retreived from a. Michigan Map silhouette vector. Gerber file. by the photoplotter, the wheel is caused to rotate so that the aperture. In preparation for a photoplotting, the aperture wheel is set up by a. Download Vector Images Fonts Cliparts Logos Maps Flags. The Export Polish MP command allows the user to export any loaded vector data sets to Polish MP format files. The Polish MP format is the input format used by the. Vector today announced it has expanded its partnership with Israeli technology company mPrest, to continue to develop and apply a machine learning and artificial. Planet Ark is all about creating positive environmental actions, for everyone but especially for you. And the easiest way to learn about those actions is to. Guide to math, algorithms, and code for hexagonal grids in games. This process. is subject. Artwork for printed circuit design is photoplotted film or. Gerber files used to drive the photoplotter, NC Drill file and. F_50970606_lZLSyUAbwdg9P3BAAZG14k5hS9IqjQsK.jpg' alt='Vector Us Map Dots Stickers' title='Vector Us Map Dots Stickers' />
See also. Valuable Final Artwork. American Standard Code for Information Interchange. A. text and. control code character set used in computers. Pronounced. ASS key. Note The following description is excerpted from FOLDOC,. Free Online. Dictionary of Computing. The links in this definition point to FOLDOC. Open link in new tab. ASCII. is the basis of character sets used in almost all present day. US ASCII. uses only the lower seven. A Z. More modern coded character sets e. Latin 1. Unicode. ASCII for values. Latin. characters like. German ess tsett, characters. Latin writing systems e. Cyrillic, or. Han characters. ASCII character set. Latin 1, an extension to 2. US ASCII. 1. 28 character set, has been provided online by Paul Lutus at. Arachnoid. com. A thoroughly unoffical subset of. US ASCII. which contains the space character, numbers, most basic punctuation, and. A Z, but lacks the. The process of positioning and soldering components to a. PCB. 2. Act or process of fitting together parts to make a. A drawing depicting the locations of components, with their. Also called component locator drawing. A manufacturing facility for attaching and soldering components. Aka assembler and also CM, for contract manufacturer. American Society of Testing and Materials. Automatic Test Equipment. See also. DUT. American Wire Gauge. A PCB Designer needs to know diameters. E pads. The American Wire Gauge, formerly known as the Brown and Sharpe. B S. Gauge, originated in the wire drawing industry. The gauge is. calculated. From this basic relationship, the following rules can be. ASTM. data by Global Wire Group. PC board design or a silicon chip design automatically. Abbrev. BGA. flip chip. PCB footprint. PCB are heated in a reflow oven. Advantages of the. QFP. and thus has a long shelf life. Disadvantages of the. BGA. are 1 they, or their solder joints, are subject to stress related. For example, the intense vibration of rocket powered space vehicles can. PCB, 2 they can not be hand soldered they require. The electrode of a transistor which controls the movements of. It is the element which. A metal beam flat metallic lead which extends from the edge of a. Upon separation of the individual die normally by chemical. This method is an example of. Graf. Ball Grid Array. Also, a CAD file which represents the. Board vendor. A manufacturer of printed circuit boards. Aka. fabricator. The portion of an electronic component exclusive of its pins or. Bill of Materials. A list of components to be. For a PCB the. BOM. A. BOM. is used for ordering parts and, along with an. Controlled Collapsed Chip Connect. A type of. flip chip. Intels Pentium III. Motorolas. Power. PC 6. 03 and Power. PC 6. 04 RISC Microprocessors. Here is an. Friday, February 0. C4CBGA interconnect technology. Kromann, Gerke and Huang of Motorolas Advanced Packaging Technology. Division. Computer Aided Design. A system where engineers create a design. In electronics, the result would be a printed. Simply a concatenation of the two terms. CAD. CAM. Computer Assisted Engineering. In electronics work, CAE refers to. Conductive Anodic Filamentation or Conductive Anodic Filament. An electrical short which occurs in. PCBs. when a conductive filament forms in the laminate dielectric material. CAF. is a potentially dangerous source of electrical failure in the PCB. PCB designs have increased in density, with hole to hole spacings. CAF. has become an everyday concern. Erik J. Bergum, CAF. Resistance. of NON. DICY. FR 4,. PC FAB. Computer Aided Manufacturing. See. CAM files. CAM means Computer Aided Manufacturing. These are the data files. The types of. CAM files. Gerber file, which controls a photoplotter, 2 NC Drill file. NC Drill machine and 3 fab and assembly drawings in soft. CAM files represent the valuable final product of. They are handed off to the board house which further refines and. CAM data in their processes, for example in step and repeat. Some PCB design software companies refer to all plotter or. CAM files., although some of the plots may be check plots which are not used in. To draw schematics with CAE software in such a way that. The. extracted data. BOM. The more useful the data that is included in the schematic, the more. BOM and netlist extracted from it will be. Extract data from a CAE schematic. E. g. Capture. The process of creating a CAE drawing containing intelligent data. E. G. Schematic capture. A connector which is fabricated as an integral portion of a printed. Often employed to enable a daughter or. See. finger. Extract information automatically through the use of software, as. In an electron tube the electrode through which a primary. General name for. When a semiconductor diode is biased in. In electrolytic plating, the. Graf. Ceramic Ball Grid Array. NEMA. grade of industrial laminate having a substrate of woven glass surfaces. It has good electrical. FR 4. Pen plots that are suitable for checking only. Pads are represented. This technique is used to enhance transparency of multiple layers. An integrated circuit manufactured on a semiconductor substrate. Also called a. die. Row and column vectors Wikipedia. In linear algebra, a column vector or column matrix is an m 1 matrix, that is, a matrix consisting of a single column of m elements,xx. Similarly, a row vector or row matrix is a 1 mmatrix, that is, a matrix consisting of a single row of m elements1xx. Throughout, boldface is used for the row and column vectors. The transpose indicated by T of a row vector is a column vectorx. Tx. 1x. 2xm,displaystyle beginbmatrixx1 x2 dots xmendbmatrixrm Tbeginbmatrixx1x2vdots xmendbmatrix,and the transpose of a column vector is a row vectorx. Tx. 1x. 2xm. displaystyle beginbmatrixx1x2vdots xmendbmatrixrm Tbeginbmatrixx1 x2 dots xmendbmatrix. The set of all row vectors forms a vector space called row space, similarly the set of all column vectors forms a vector space called column space. The dimensions of the row and column spaces equals the number of entries in the row or column vector. The column space can be viewed as the dual space to the row space, since any linear functional on the space of column vectors can be represented uniquely as an inner product with a specific row vector. NotationeditTo simplify writing column vectors in line with other text, sometimes they are written as row vectors with the transpose operation applied to them. Tdisplaystyle mathbf x beginbmatrixx1 x2 dots xmendbmatrixrm Torxx. Tdisplaystyle mathbf x beginbmatrixx1,x2,dots ,xmendbmatrixrm TSome authors also use the convention of writing both column vectors and row vectors as rows, but separating row vector elements with commas and column vector elements with semicolons see alternative notation 2 in the table below. Row vector. Column vector. Standard matrix notationarray spaces, no commas, transpose signsx. Tdisplaystyle beginbmatrixx1x2vdots xmendbmatrixtext or beginbmatrixx1 x2 dots xmendbmatrixrm TAlternative notation 1commas, transpose signsx. Tdisplaystyle beginbmatrixx1,x2,dots ,xmendbmatrixrm TAlternative notation 2commas and semicolons, no transpose signsx. OperationseditMatrix multiplication involves the action of multiplying each row vector of one matrix by each column vector of another matrix. The dot product of two vectors a and b is equivalent to the matrix product of the row vector representation of a and the column vector representation of b,aba. Tba. 1a. 2a. 3b. T mathbf b beginbmatrixa1 a2 a3endbmatrixbeginbmatrixb1b2b3endbmatrixa1b1a2b2a3b3,which is also equivalent to the matrix product of the row vector representation of b and the column vector representation of a,bab. Tab. 1b. 2b. 3a. T mathbf a beginbmatrixb1 b2 b3endbmatrixbeginbmatrixa1a2a3endbmatrix. The matrix product of a column and a row vector gives the dyadic product of two vectors a and b, an example of the more general tensor product. The matrix product of the column vector representation of a and the row vector representation of b gives the components of their dyadic product,abab. Ta. 1a. 2a. 3b. T beginbmatrixa1a2a3endbmatrixbeginbmatrixb1 b2 b3endbmatrixbeginbmatrixa1b1 a1b2 a1b3a2b1 a2b2 a2b3a3b1 a3b2 a3b3endbmatrix,which is not equivalent to the matrix product of the column vector representation of b and the row vector representation of a,baba. Tb. 1b. 2b. 3a. T beginbmatrixb1b2b3endbmatrixbeginbmatrixa1 a2 a3endbmatrixbeginbmatrixb1a1 b1a2 b1a3b2a1 b2a2 b2a3b3a1 b3a2 b3a3endbmatrix. In this case the two matrices are different they are transposes of each other. Preferred input vectors for matrix transformationseditFrequently a row vector presents itself for an operation within n space expressed by an n n matrix M,v. Mp. displaystyle v. Mp. Then p is also a row vector and may present to another n n matrix Q,p. Qt. displaystyle p. Qt. Conveniently, one can write t p Q v MQ telling us that the matrix product transformation MQ can take v directly to t. Continuing with row vectors, matrix transformations further reconfiguring n space can be applied to the right of previous outputs. In contrast, when a column vector is transformed to become another column under an n n matrix action, the operation occurs to the left,pMv,tQpdisplaystyle pMv,quad tQp,leading to the algebraic expression QM v for the composed output from v input. The matrix transformations mount up to the left in this use of a column vector for input to matrix transformation. Users of left to right scripts may find the line vector as input more intuitiveoriginal research. Nevertheless, using the transpose operation these differences between inputs of a row or column nature are resolved by an antihomomorphism between the groups arising on the two sides. The technical construction uses the dual space associated with a vector space to develop the transpose of a linear map. For an instance where this row vector input convention has been used to good effect see Raiz Usmani,2 where on page 1. The product mapping ST of U into W is given by STSTTdisplaystyle alpha STalpha STbeta Tgamma. The Greek letters represent row vectors. Ludwik Silberstein used row vectors for spacetime events he applied Lorentz transformation matrices on the right in his Theory of Relativity in 1. In 1. 96. 3 when Mc. Graw Hill published Differential Geometry by Heinrich Guggenheimer of the University of Minnesota, he uses the row vector convention in chapter 5, Introduction to transformation groups eqs. When H. S. M. Coxeter reviewed3Linear Geometry by Rafael Artzy, he wrote, Artzy is to be congratulated on his choice of the left to right convention, which enables him to regard a point as a row matrix instead of the clumsy column that many authors prefer. J. W. P. Hirschfeld used right multiplication of row vectors by matrices in his description of projectivities on the Galois geometry PG1,q. See alsoeditReferenceseditAxler, Sheldon Jay 1. Linear Algebra Done Right 2nd ed., Springer Verlag, ISBN 0 3. Lay, David C. August 2. Linear Algebra and Its Applications 3rd ed., Addison Wesley, ISBN 9. Meyer, Carl D. February 1. Matrix Analysis and Applied Linear Algebra, Society for Industrial and Applied Mathematics SIAM, ISBN 9. Poole, David 2. 00. Linear Algebra A Modern Introduction 2nd ed., BrooksCole, ISBN 0 5. Anton, Howard 2. Elementary Linear Algebra Applications Version 9th ed., Wiley International Leon, Steven J. Linear Algebra With Applications 7th ed., Pearson Prentice Hall.