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Random Access Memory (5375 bytes)
4: ...m, in contrast to Read-Only Memory or [[Read-only memory|ROM]]. RAM is usually used for [[primary storage]... 7: ...teristic of RAM is that its accesses to different memory locations are almost always completed at about th... 9: ...a computer). The basic ideas behind tube and core memory are still used in modern RAM implemented with [[i... 11: ...y]]-filled tubes to hold a series of bits. [[Drum memory]] acted much like the modern [[hard disk]], stori... 21: As for [[carbon nanotube]] memory, a high-tech startup [http://www.nantero.com/ Nan... Static Random Access Memory (4021 bytes) 1: ...s Memory''' (SRAM) is a type of [[semiconductor]] memory. 3: ...]] as opposed to [[read-only memory]] and [[flash memory]]. 5: ... order regardless of the memory location that was accessed before. 7: ...thus typically takes six [[MOSFET]]s to store one memory bit. 9: ...ead much faster than in a [[Dynamic Random Access Memory|DRAM]]. Dynamic random access memory (13919 bytes) 1: '''DRAM''' is a type of [[random access memory]] that stores each [[bit]] of data in a separate ... 3: ... Random Access Memory|SRAM]] and other ''static'' memory. 4: ...ly is removed, it is in the class of ''volatile'' memory devices. 5: DRAM is also in the class of ''solid-state'' memory. 29: ...AM is [[Flash memory]]. Currently available flash memory is slightly cheaper per bit than DRAM, is non-vol... Random access (1111 bytes) 1: ...The term was also used to describe [[ferrite-core memory]] in early computers). 3: ...tures, such as [[linked list]]s, sacrifice random access to make other operations, such as inserting, dele... Random Access Machine (698 bytes) 1: ...registers of unlimited size which can be accessed randomly. 3: ...ations, jump instructions and direct and indirect access to the registers. Random Access Channel (491 bytes) 1: ...her wireless device on a [[Time Division Multiple Access|TDMA-based network]] when it needs to get the att... 3: ...MA,and CDMA based network) especially for initial Access and Bursty data transmission. Parallel Random Access Machine (915 bytes) 1: '''PRAM''' stands for '''Parallel Random Access Machine''', which is an [[abstract machine]] for ... 3: ...imultaneous access is permitted or prohibited. As accesses can be ''reads'' or ''writes'', there are four ... Non-Uniform Memory Access (2466 bytes) 1: ...ts own local memory faster than non-local memory (memory which is local to another processor or shared bet... 6: ...MA, maintaining [[cache coherence]] across shared memory has a significant overhead. 10: ...s to keep a consistent memory image when the same memory location is stored in more than one cache. 11: ... algorithms that make unnecessary NUMA-unfriendly accesses. 14: ...[[cluster computing]]. The addition of [[virtual memory]] paging to a cluster architecture can allow NUMA... Direct memory access (1790 bytes) 1: ...subsystems within a [[computer]] to access system memory for reading and/or writing independently of the m... 5: ...rom external memory to faster, internal (on-chip) memory. Such an operation does not stall the processor a... 7: ...ther" DMA allows the transfer of data to multiple memory areas in a single DMA transaction. It is equivale... 12: * [[Remote Direct Memory Access]] 17: [[Category:Computer memory]] Remote Direct Memory Access (1628 bytes) 1: ...rom the [[main memory]] of one system to the main memory of another. As there is no CPU, cache, or contex... 12: [[Category:Computer memory]] Random variable (11238 bytes) 1: ...might describe the possible outcomes of picking a random person and measuring their height. 3: ..., a random variable cannot be assigned a value; a random variable does not describe the actual outcome of ... 5: ... allow easy visualisation of the practical use of random variables, their mathematical construction allows... 9: === Random variables === 11: ...ower set of Ω. One among the many possible random variables defined on this space is Random randumb (2777 bytes) 3: ...s [[website]] which first appeared on the web as "Random Randumb" in [[2001]]. The group goes much farther... 6: Random Randumb is based on the value of demonstrating st... 34: Random Randumb, although disregarded by most as a pointl... 39: ...ed. Rumors have been spread around forums that a "Random Randumb Reunion" [[DVD]] is planned. Others have ... Random field (1466 bytes) 1: ...p>''n''</sup>, a probability measure π is a '''random field''' if 4: ...h as '''Markov random field''' (MRF) and '''Gibbs random field''' (GRF). A MRF exhibits the Markovian prop... 6: ...ble assumes a value does not depend on all of the random variables. 7: ...;' is the same realization of Ω, except for random variable <math>X_i</math>. It is easy to see that... Random sample (390 bytes) 1: ...le]] is a subset of a larger [[population]]. A '''random sample''' is one in which every item/object there... 4: *[[random]] 5: *[[random sampling]] Random sequence (1212 bytes) 2: ...ort, a [[random]] sequence is a [[sequence]] of [[random variable]]s. 4: ...sequence of [[independent identically-distributed random variables]]. 6: ... can produce that sequence ('''Chaitin-Kolmogorov randomness'''). 9: * [[random number]] 10: * [[randomness]] Random optimization (773 bytes) 1: '''Random optimization''' is the name applied to a class of... 4: ...e compared with [[genetic algorithm]]s, and often random optimization outperforms other methods with signi... 6: Contrast [[Random-restart hill climbing]]; [[genetic algorithm]]. 10: * Matyas, J (1965), Random optimization, Automation and remote control, vol ... 11: ... Solis, F.J and Wets, R.J (1981), Minimization by random search techniques, Mathematics of operations rese... Random number (7417 bytes) 1: ...s a single observation (outcome) of a specified [[random variable]]. Where no distribution is specified, t... 3: ...f how it was generated. Informally, to generate a random number means that before it was generated, all [[... 5: ==Importance of random numbers== 7: ...[[protocol]] of a study from a participant (see [[randomized controlled trial]]) and [[Monte Carlo method|... 9: ...g]], while [[Pseudorandom number generator|pseudo-random]] numbers are of general importance in [[computer... Random Harvest (1682 bytes) 1: .... He begins a new life, then suddenly regains his memory and tries to pick up his old life, having no reco... 3: [[image:RandomHarvest.jpg|left|thumb|1949 paperback edition]]The... /dev/random (1841 bytes) 1: ... When the entropy pool is empty, reads from /dev/random will [[blocking I/O|block]] until additional envi... 3: ... its own random number generator seeded from /dev/random. 11: *[[hardware random number generator]] 12: *[[cryptographically secure pseudo-random number generator]] 14: [[Category:Random numbers]] Random House (1573 bytes) 1: ... on the side at random," which suggested the name Random House. 3: ...the Random House Ballantine Publishing Group, and Random House Ventures. It also has a division called [[D... 5: ...f]], Inc. and [[Pantheon Books]] were acquired by Random House in [[1960]] and [[1961]], respectively; wor... 10: * [http://www.randomhouse.com/about/history.html Randomhouse.com's history page] 12: ...f Bennet Cerf with the quote on the origin of the Random House name]
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