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| | Analog computer - Wikipedia, the free encyclopedia |
 | | Analog synthesizers can also be viewed as a form of analog computer, and their technology was originally based on electronic analog computer technology. | | | There is an intermediate device, a hybrid computer, in which a digital computer is combined with an analog computer. | | | Hybrid computers are used to obtain a very accurate but imprecise 'seed' value, using an analog computer front-end, which is then fed into a digital computer iterative process to achieve the final desired degree of precision. |
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http://en.wikipedia.org/wiki/Analog_computer
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| | Analog - Wikipedia, the free encyclopedia |
| | analog (chemistry), a structural derivative of a parent compound that often differs from it by a single element. | | | analog circuit, an electronic circuit using a continuously variable signal | | | analog computer, a computer that uses electrical or mechanical phenomena |
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http://en.wikipedia.org/wiki/Analog
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| | computer. The Columbia Encyclopedia, Sixth Edition. 2001-05 |
| | Although analog computers are commonly found in such forms as speedometers and watt-hour meters, they largely have been made obsolete for general-purpose mathematical computations and data storage by digital computers. | | | Because of this feature, analog computers were especially useful in the simulation and evaluation of dynamic situations, such as the flight of a space capsule or the changing weather patterns over a certain area. | | | The key component of the analog computer is the operational amplifier, and the computer’s capacity is determined by the number of amplifiers it contains (often over 100). |
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http://www.bartleby.com/65/co/computer.html
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| | Analog Computers (from computer) -- Britannica Student Encyclopedia |
| | More from Britannica on "Analog Computers (from computer)"... | | | For example, an automobile speedometer is a mechanical analog computer that measures the rotations per minute of the drive shaft and translates that... | | | Analog computers work by translating data from constantly changing physical conditions into corresponding mechanical or electrical quantities. |
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http://www.britannica.com/ebi/article-199022
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| | Brain as an Analog Computer |
| | A tape recording is an analog record that stores a waveform analogous to sound waves or electronic waves generated by sound interacting with a microphone. | | | Oscillators are common in analog electronic circuitries and are often the basis of tuning circuits to incoming waveforms. | | | Analog computers use circuits that compute in real time. |
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http://www.nutramed.com/Philosophy/analog_computer.htm
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| | Computer Codes |
| | Analog computers are built to model the important properties of a system about which a computed result is desired. | | | A major problem with analog computers, one that rules out their use in most cases, is that a computer must be designed and constructed for each different problem. | | | Analog computers are a very small and specialized part of the computing world, which we will henceforth ignore. |
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http://cs.colgate.edu/faculty/brackett/C150Fa98/Notes150/N01-ComputerCodes.html
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| | EETimes.com - Analog computer trumps Turing model |
| | HAIFA, Israel — Recent developments in computing theory challenge longstanding assumption about digital and analog computing, and suggest that analog computations are more powerful than digital ones. | | | The mathematical model of analog computation suggested by Siegelmann is, similarly, a dynamical system that evolves in a continuous-phase space, in contrast to the discrete-space model of digital computers. | | | The crux of the difference between analog and digital computing is the number of bits of precision available. |
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http://www.eetimes.com/story/OEG19981103S0017
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| | Analog hole - Wikipedia, the free encyclopedia |
| | The analog hole (sometimes analog reconversion problem or analog reconversion issue) is a fundamental vulnerability in copy prevention schemes for noninteractive digital content which is intended to be played back using analog means. | | | Although the technical possibility of making digital recordings from analog outputs has existed for some time, it was not necessarily viewed as a "hole" before widespread deployments of DRM in the late 1990s. | | | When the information is converted to a perceptible analog form, there are no restrictions on the resulting analog signal, and the content can be captured back into digital form with no restrictions. |
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http://www.wikipedia.org/wiki/Analog_Hole
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| | Analog Computation |
| | The analog computer is not programmed, like a digital computer, but is rewired each time a new problem is to be solved. | | | Digital computers replaced general purpose analog computers by the early 1970s because analog computers had limited precision and were difficult to reconfigure. | | | Analog computer chips use less power and can be made much larger than digital computer chips. |
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http://www.indiana.edu/~rcapub/v21n2/p24.html
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| | Nike Computer |
| | Although the analog machine is correctly termed a computer, it does not perform its computations by numerical calculations as does the calculator or the digital computer. | | | But the analog computer can be used to model any physical system that can be described by mathematical formulas, even more mundane ones from modeling the effects of pollution on the fish population in a river to fine tuning the suspension on a new car design. | | | Analog computers may seem to be "simple" or "like a toy computer", in fact they are powerful tools that were used during the 1950s and 1960s to design and test systems like ICBMs, supersonic aircraft and spacecraft. |
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http://ed-thelen.org/computer.html
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| | ANALOG COMPUTER |
| | Analog computers are especially suited for the solution of complex non-linear equations and for the simulation of multi-dimensional, parallel and continuous processes. | | | Compared with digital COMPUTERs, the programming of analog computers is time consuming and limited in scope. | | | A computer that represents data in terms of physical measures or quantities and proceeds along a continuum constituted by its components. |
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http://pespmc1.vub.ac.be/ASC/ANALOG_COMPU.html
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| | G6 Analog Computer |
| | USING THE COMDYNA GP-6 ANALOG COMPUTER, by Professor Ian Petersen, Department of Electrical Engineering, Australian Defense Force Academy, is an excellent presentation of programming and operating the GP-6. | | | operational amplifiers into the endless number of analog circuit devices. | | | Analog computing fundamentals are the roots of linear circuits. |
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http://www.comdyna.com/gp6intro.htm
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| | Analog - definition of Analog in Encyclopedia |
| | Any information may be conveyed by an analog signal, often such a signal is a measured response to changes in physical phenomena, such as sound, light, temperature, position, or pressure, and is achieved using a transducer. | | | Analog circuits do not involve quantisation of information into digital format. | | | The primary disadvantage of analog signalling is that any system has noise—that is, random variations—in it. |
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http://encyclopedia.laborlawtalk.com/Analog
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| | Building an Analog Computer |
| | Analog computers may not be as accurate as digital computers, but they are incredibly fast at solving differential equations. | | | Because analog computers solve the whole equation at once, we could change the frequency or shape of the forcing function and have, with an unnoticeable delay, the new solution. | | | Korn, Granino A. Korn, Theresa M. Electronic Analog Computers: (D-C Analog Computers). |
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http://www.owlnet.rice.edu/~elec301/Projects99/anlgcomp
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| | Welch Analog Computer |
| | With such accuracy the purpose of the computer was not to serve as an accurate computing device, but rather as a machine for demonstrating computing principles and for introduction into computing. | | | A portion of this analog computer is digital since the resistances used are digital. | | | This computer permits setting up a number of electrical circuits, which may be used to solve several types of simple non-electrical problems. |
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http://home1.gte.net/vze1re4o/welch.html
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| | sts3700b: Lecture Number 20a |
| | This computer is significant in the history not only of analog computation but also of the formulation of simulation techniques. | | | The analog computer is programmed by interconnecting the various arithmetic units in such a way that the desired problem will be solved. | | | For a start, all operations in an analog computer are performed in parallel, and secondly, data is represented in an analog computer as voltages, a very compact but not necessarily robust form of data. |
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http://www.yorku.ca/sasit/sts/sts3700b/lecture20a.html
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| | Videomaker Magazine Computer Editing: Analog to Digital Video Conversion |
| | You'll be using the same camcorder and computer software, whether you're working with digital or analog tape, and you won't have to add any components to the computer. | | | Analog camcorders, on the other hand, record analog information, which can't be transferred to the computer without first being converted into a suitable digital format. | | | You won't be able to control your analog camcorder with your computer and must start and stop both the source camcorder and the computer software manually to capture, but overall, the process is painless. |
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http://www.videomaker.com/scripts/article_print.cfm?id=8851
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| | Analog Computer Museum - Main Page |
| | Analog computers have a long history dating back to prehistory, but with the recent development of the microprocessor these computers and their technology has been discarded and is quickly being lost to history. | | | Simply, an analog computer is a computing device that has two distinguishing characteristics: | | | By constrast, a digital computer can only perform sequential (one at a time) operations, and operates on discrete (noncontinuous) numbers. |
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http://dcoward.best.vwh.net/analog
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| | analog computer - definition of analog computer by the Free Online Dictionary, Thesaurus and Encyclopedia. |
| | analog computer - a computer that represents information by variable quantities (e.g., positions or voltages) | | | slide rule, slipstick - analog computer consisting of a handheld instrument used for rapid calculations; have been replaced by pocket calculators | | | A computer in which numerical data are represented by measurable physical variables, such as electrical voltage. |
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http://www.thefreedictionary.com/analog+computer
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| | Patent 6278632: Method and circuitry for performing analog over-program and under-program detection for a multistate memory cell |
| | Although this programming method is simple to implement it has the disadvantage that it necessitates the use of many programming pulses to reach all of the possible states. | | | Another method is to use a programming operation which has been optimized for programming a memory cell to each of the different states. | | | If the cell has not been properly programmed, then additional programming pulses are applied (in the case of under-programming) or an error flag is set and the programming algorithm is terminated (in the case of an over-programmed cell). |
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http://www.freepatentsonline.com/6278632.html
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| | The Rebirth of Computer Music by Analog Signal Processing |
| | With analog systems, conversely the problems and systems cost associated with connecting computing nodes are minor compared to those associated with designing the basic computing elements to meet performance requirements in the areas of component parameter spread, signal/noise ratio, distortion and crosstalk. | | | An analog signal processing architecture is proposed consisting of a memoryless, multidimensional nonlinear function generator, a linear time-invariant system simulator, a non-volatile store, and interface, calibration, and control modules. | | | Therefore if analog circuits can be designed to meet applications requirements, a mainly analog system will have lower system costs than a digital one. |
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http://www.cnmat.berkeley.edu/~adrian/ICMC1994.html
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| | Energy Citations Database (ECD) - Energy and Energy-Related Bibliographic Citations |
| | Properties of a general purpose analog computer and a digital differential analyzer were combined to yield a program which employs, as input, standard data cards prepared from a diagram analogous to an analog computer diagram. | | | It may be applied to the more general types of boundary value problems arising in process simulation in addition to the initial value problems ordinarily solved on analog computers. | | | A system was developed to program a digital computer in much the same manner as an analog computer is programmed. |
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http://www.osti.gov/energycitations/product.biblio.jsp?osti_id=4691480
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| | IBCS - Topic: Analog - Digital data |
| | To convert analog data to digital data, the analog data has to be sampled and then converted to an approximate value. | | | Some information is lost in the process, for example the curve of the analog temperature can not be reproduced exactly from the digital data – the data between each sample has been lost. | | | Digitised data, although approximate, can be processed and transmitted by computer systems efficiently and reliably than analog data. |
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http://www.ib-computing.com/program/core/analog_digital.html
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| | Section 12: Analog approaches to CGI |
| | As computer graphics systems became more powerful in the 1980s, Harrison's analog systems began to be superseded by digital CG rendered keyframe animation, and now are no longer used in production. | | | But ultimately, the analog image quality produced by such CRT rescan systems could not compete with that of totally digital systems. | | | Perhaps one of the earliest pioneers of this analog computer animation approach was Lee Harrison III. |
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http://accad.osu.edu/~waynec/history/lesson12.html
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| | Edge: IS LIFE ANALOG OR DIGITAL? |
| | They give examples of numbers that are proved to be non-computable with digital computers but are computable with a simple kind of analog computer. | | | The essential difference between analog and digital computers is that an analog computer deals directly with continuous variables while a digital computer deals only with discrete variables. | | | Their analog computer is a classical field propagating though space and time and obeying a linear wave equation. |
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http://www.edge.org/3rd_culture/dyson_ad/dyson_ad_index.html
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| | Welcome to Play-Hookey! |
| | Now that we have begun looking at both digital and analog circuitry, it is only appropriate to start looking at the components that make up these circuits, and to explore their properties. | | | Analog computers are not completely gone from the scene, in spite of the tremendous advances made in the digital field. | | | Digital logic is at the core of all digital computers, and yet it is entirely based on three fundamental operations, designated AND, OR, and NOT. |
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http://www.play-hookey.com
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| | Analog computer - encyclopedia article about Analog computer. |
| | Analog synthesizers can also be viewed as a form of analog computer, and their technology was originally based on electronic analog computer technology. | | | Analog computers, however, have been replaced by digital computers for almost all calculations. | | | There is an intermediate group, hybrid computers Hybrid computers are made by taking the best features of the analog computer and digital computer. |
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http://encyclopedia.thefreedictionary.com/Analog%20computer
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| | t_r_TimePot |
| | At our site the computer operator did nothing but watch for red warning lights indicating that the computer was not "settled" - correctly solving the problem - boring - no face. | | | In theory the computer operator was supposed to read off this value to the Battery Control Officer (BCO). | | | All precision multiplying and dividing by time was done by this potentiometer. |
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http://ed-thelen.org/t_r_timepot.html
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