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| | Probert Encyclopaedia: Science & Technology (Ac) |
 | | In computing, the accumulator is a hardware register in the CPU used to receive the results of operations performed by the arithmetic and logic unit (ALU). | | | In computing, an account is a login name and a password, perhaps a personal directory (certainly on a Unix system) and perhaps a shell (certainly on a Unix system) and perhaps personal settings for a graphical (window) environment. | | | In computing, an access arm or actuator arm, is a mechanical arm that moves the read/write head across the surface of a disk in a manner similar to a tone arm on a record player. |
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http://www.probertencyclopaedia.com/SAA.HTM
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| | The Fetch-Execute Cycle |
| | Now the computer adds the number 40 in the memory buffer register with the number in the accumulator. | | | In fact, all computer instructions start this way - the CPU has to fetch the instruction from memory. | | | Next the computer fetches the number to add and puts it temporarily in the memory buffer register. |
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http://richardbowles.tripod.com/durham/comparch/fetchex.htm
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| | Accumulators - definition of Accumulators in Encyclopedia |
| | The accumulator is set to zero initially, each number in turn is added to the value in the accumulator and only when all numbers have been added is the result written to main memory. | | | Access to main memory is slower than access to the accumulator which usually has direct paths to and from the arithmetic and logic unit (ALU). | | | This article was originally based on material from the Free On-line Dictionary of Computing, which is licensed under the GFDL. |
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http://encyclopedia.laborlawtalk.com/Accumulators
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| | The Modern History of Computing |
| | The earliest computing machines in wide use were not digital but analog. | | | The term computing machine, used increasingly from the 1920s, refers to any machine that does the work of a human computer, i.e. | | | In most real machines the process just described would be done by three separate orders, the first bringing [H11] (=content of H11) to a central accumulator, the second adding [H13] into the accumulator, and the third sending the result to H27; thus only one address would be required in each order. |
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http://plato.stanford.edu/entries/computing-history
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| | Patent 4202039: Specialized microprocessor for computing the sum of products of two complex operands |
| | The products are obtained through the use of the well-known multiplication algorithm by performing successive additions and shifts of partial products in a 32-bit accumulator consisting of the left and right accumulators LAC 1 and RAC 1 connected in series. | | | The present invention overcomes these difficulties by providing a specialized microprocessor capable of computing the sums of products of two complex operands wherein the real and imaginary parts of the product of the two complex operands are simultaneously computed in a multiplication and accumulation unit. | | | A specialized processor capable of computing a sum of products S=.SIGMA..+-.Pi where every product Pi is the product of two n-bit complex operands Ai+j Bi, the multiplier, and Ci+j Di, the multiplicand, where j=.sqroot.-1. |
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http://www.freepatentsonline.com/4202039.html
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| | Weights and measures approved retail price computing scales |
| | The transaction accumulator (provides customer with total for multiple items) is a unique feature typically not found in price computing scales, but is available with the SF/SG Series. | | | The SF-KC is the only retail price computing scale with this recharging circuit. | | | To recall the unit price from memory just price the desired PLU key. |
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http://www.scalenet.com/and/industrialscales/food-deli/sf.html
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| | register - OneLook Dictionary Search |
| | register : Dictionary of Computing and Digital Media [home, info] | | | register : Free On-line Dictionary of Computing [home, info] | | | Phrases that include register: federal register, lloyd's register, accumulator register, check register, home location register, more... |
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http://www.onelook.com/cgi-bin/cgiwrap/bware/dofind.cgi?word=register
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| | 01Glossary |
| | An accumulator is a certain type of register in a computer's processor that is used to store the results of an operation performed by the arithmetic and logic unit (ALU). | | | The Apple line and especially the Apple Macintosh set new directions for home computing and helped skyrocket the interest in the home computing arena. | | | The ACE was formed in 1991 by a collection of vendors seeking to use the MIPS Computer Systems RISC (Reduced Instruction Set Computer) processing architecture or the 80X86 microprocessor technology from Intel and develop source code compatibility between SCO UNIX (Santa Cruz Operation) and System V release 4.0 of Unix, and other compatibilities. |
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http://www.computermuseum.li/Testpage/01HISTORYCD-Glossary.htm
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| | Electronic Computers Within The Ordnance Corps, ENIAC |
| | The ENIAC was constructed at the Moore School component by component, beginning with the cycling unit and an accumulator in June 1944. | | | In applying the ENIAC to a particular computation it was first necessary to break down the work into a number of basic computing sequences, the ordering of which was controlled by the master programmer. | | | The ENIAC was not originally designed as an internally-programmed computer. |
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http://ftp.arl.mil/~mike/comphist/61ordnance/chap2.html
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| | Fernando J Corbató |
| | Initially the basic system chosen was the newly marketed GE 635.This computer was similar to the IBM 7094's which Project MAC and Bell-Labs already had experience with, both machines had the same 36-bit word, accumulator, quotient register, index registers. | | | The Multics system was developed as part of M.I.T's Project MAC (Multiple Access Computing), the system was a collaborative effort between M.I.T., G.E's Large Computer Products Division and Bell Telephone Laboratories. | | | Several modifications had to be made though to the basic model to accommodate some of the developments, which were proposed by the software developers. |
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http://www.benmeadowcroft.com/reports/corbato
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| | accumulator: Information From Answers.com |
| | The term in full is almost never used of microprocessor registers, for example, though symbolic names for arithmetic registers beginning in "A" derive from historical use of the term "accumulator" (and not from "arithmetic" as is sometimes believed). | | | This article was originally based on material from the Free On-line Dictionary of Computing, which is licensed under the GFDL. | | | Confusingly, though, an "A" register name prefix may also stand for "address", as for example on the Motorola 68000 family. |
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http://www.answers.com/topic/accumulator-1
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| | Fast and Accurate Floating Point Summation with Application to (ResearchIndex) |
| | Abstract: We present several simple algorithms for accurately computing the sum of n oating point numbers using a wider accumulator. | | | 1 Computer Science Division Technical Report UCBCSD (context) - Hida, point et al. | | | Computational Geometry James Demmel Computer Science Division and Mathematics... |
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http://citeseer.lcs.mit.edu/675648.html
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| | Min-Max Principle and Alpha-Beta Pruning |
| | Alpha-beta pruning can be expressed in terms of the min-max algorithm using a special kind of accumulator. | | | In computing the min/max value of a game tree node, we can skip ("prune") the evaluation of some of the children nodes using what is known as alpha-beta pruning. | | | Let beta be an upper bound for the value of a min node B, and let C be a child node of B. |
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http://www.owlnet.rice.edu/~comp212/02-fall/lectures/38
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| | EarlyBritish-App.html |
| | Campbell-Kelly, M. A series of papers on early British programming systems (EDSAC, Manchester Mark I, etc.) to appear in the Annals of the History of Computing, a quarterly journal published by the American Federation of Information Processing Societies. | | | On Mercury, index-register (B-line) arithmetic was faster than main accumulator arithmetic. | | | Many of the American computers followed one of two patterns: either they were based broadly on the final Institute for Advanced Study (IAS) design, characterised by electrostatic storage, parallel operation and oneaddress instruction format; or they followed the revised EDVAC design, characterised by mercury delay-line storage, serial operation and a (3 -1-1)address instruction format. |
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http://ed-thelen.org/comp-hist/EarlyBritish-App.html
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| | MADM Mk I Ptototype and Kilburn's Highest Factor Routine |
| | The answers can be found in an article titled "Early Programs on the Manchester Mark I Prototype" which appeared in the July - September 1998 issue of the IEEE Annals of the History of Computing. | | | For example to add two numbers, C := A + B, on the Mark I Prototype, you had to load negative A into the Accumulator, subtract B, then negate the answer by storing it at C, doing a load negative then storing it back to C. That is C := - ((-A) - B). | | | February 1996 marked the 50th Anniversary of the ENIAC, the first all-electronic computer. |
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http://www.wittenberg.edu/academics/mathcomp/bjsdir/madmmk1.shtml
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| | A Programmable Base MDLNS MAC with Self-Generated Look-Up Table |
| | This paper presents an new architecture for a programmable second base multi-dimensional Logarithmic Number System (MDLNS) Multiply Accumulator Cell (MAC) using DRAM to store the conversion look-up table (LUT). | | | This results not only in a considerable reduction of DRAM size, but also in the elimination of adders normally required for computing non-binary exponents in a data filtering channel. | | | Archive Page >> Table of Contents >> Abstract |
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http://dx.doi.org/10.1109/IWSOC.2004.14
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| | 3.text |
| | Further on we refer to this algorithm by the notation z = round to staggered(accu) where z is a staggered number and accu is a long accumulator. | | | Unfortunately, the Arnoldi algorithm is expensive in memory and computing time since we need access to all m previous basis vectors and have to perform O(nnz + nm) operations in the mth iteration. | | | That are the scalar variables in various Krylov algorithms (ff and fi) which conflict with scalar coe?cients in the (Bi-)Lanczos algorithm. |
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http://www.ubka.uni-karlsruhe.de/vvv/2000/mathematik/3/3.text
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| | Lecture 2: Instruction Set Architectures and Compilers |
| | Complex Instruction Computing (CISC) architectures are usually register-memory architectures. | | | The x86 architecture is based on an ancient instruction set that had some aspects of accumulator architecture; it is classifed as a special-purpose register machine. | | | The ISA specifies a binary encoding of instructions. |
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http://camino.rutgers.edu/cs505/lecture2.html
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