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- Memory_refresh abstract "Memory refresh is the process of periodically reading information from an area of computer memory and immediately rewriting the read information to the same area without modification, for the purpose of preserving the information. Memory refresh is a background maintenance process required during the operation of semiconductor dynamic random access memory (DRAM), the most widely used type of computer memory, and in fact is the defining characteristic of this class of memory.In a DRAM chip, each bit of memory data is stored as the presence or absence of an electric charge on a small capacitor on the chip. As time passes, the charges in the memory cells leak away, so without being refreshed the stored data would eventually be lost. To prevent this, external circuitry periodically reads each cell and rewrites it, restoring the charge on the capacitor to its original level. Each memory refresh cycle refreshes a succeeding area of memory cells, thus repeatedly refreshing all the cells in a consecutive cycle. This process is conducted automatically, in the background, by the memory circuitry, while the computer is on, and is transparent to the user. While a refresh cycle is occurring the memory is not available for normal read and write operations, but in modern memory this "overhead" time is not large enough to significantly slow down memory operation.Computer memory that does not require refreshing is available, called static random access memory (SRAM). SRAM circuits take up more room on the semiconductor chip, because each SRAM memory cell requires four to six transistors, compared to a single transistor and a capacitor for DRAM. For this reason, the storage capacity of SRAM chips is much less than DRAM, so SRAM memory is more costly per bit. Therefore, DRAM is used for the main memory in computers, video game consoles, graphics cards and most other large uses of semiconductor memory. The need for extra circuitry to perform memory refresh makes DRAM circuits and their timing significantly more complicated than SRAM circuits, but the great advantages of DRAM in density and cost justify this complexity.".
- Memory_refresh wikiPageID "3152733".
- Memory_refresh wikiPageLength "23865".
- Memory_refresh wikiPageOutDegree "48".
- Memory_refresh wikiPageRevisionID "679039472".
- Memory_refresh wikiPageWikiLink 1T-SRAM.
- Memory_refresh wikiPageWikiLink Access_time.
- Memory_refresh wikiPageWikiLink Binary_digit.
- Memory_refresh wikiPageWikiLink Bit.
- Memory_refresh wikiPageWikiLink Bus_(computing).
- Memory_refresh wikiPageWikiLink Capacitor.
- Memory_refresh wikiPageWikiLink Category:Computer_memory.
- Memory_refresh wikiPageWikiLink Computer_data_storage.
- Memory_refresh wikiPageWikiLink Computer_memory.
- Memory_refresh wikiPageWikiLink Delay_line_memory.
- Memory_refresh wikiPageWikiLink Dynamic_random-access_memory.
- Memory_refresh wikiPageWikiLink Dynamic_random_access_memory.
- Memory_refresh wikiPageWikiLink Electric_charge.
- Memory_refresh wikiPageWikiLink Embedded_system.
- Memory_refresh wikiPageWikiLink Flip-flop_(electronics).
- Memory_refresh wikiPageWikiLink GameCube.
- Memory_refresh wikiPageWikiLink Hibernation_(computing).
- Memory_refresh wikiPageWikiLink Integrated_circuit.
- Memory_refresh wikiPageWikiLink Interrupt.
- Memory_refresh wikiPageWikiLink JEDEC.
- Memory_refresh wikiPageWikiLink Low-power_electronics.
- Memory_refresh wikiPageWikiLink Magnetic-core_memory.
- Memory_refresh wikiPageWikiLink Magnetic_core_memory.
- Memory_refresh wikiPageWikiLink Memory_controller.
- Memory_refresh wikiPageWikiLink Memory_scrubbing.
- Memory_refresh wikiPageWikiLink Microprocessor.
- Memory_refresh wikiPageWikiLink MoSys.
- Memory_refresh wikiPageWikiLink Motorola_6845.
- Memory_refresh wikiPageWikiLink Nintendo.
- Memory_refresh wikiPageWikiLink Nintendo_Gamecube.
- Memory_refresh wikiPageWikiLink Read_cycle.
- Memory_refresh wikiPageWikiLink Reading_(computer).
- Memory_refresh wikiPageWikiLink Real-time_computing.
- Memory_refresh wikiPageWikiLink Row_hammer.
- Memory_refresh wikiPageWikiLink SDRAM.
- Memory_refresh wikiPageWikiLink Semiconductor_memory.
- Memory_refresh wikiPageWikiLink Sense_amplifier.
- Memory_refresh wikiPageWikiLink Static_random-access_memory.
- Memory_refresh wikiPageWikiLink Static_random_access_memory.
- Memory_refresh wikiPageWikiLink Subroutine.
- Memory_refresh wikiPageWikiLink Synchronous_dynamic_random-access_memory.
- Memory_refresh wikiPageWikiLink Transistor.
- Memory_refresh wikiPageWikiLink Transmission_line.
- Memory_refresh wikiPageWikiLink Wii.
- Memory_refresh wikiPageWikiLink Williams_tube.
- Memory_refresh wikiPageWikiLink Zilog_Z80.
- Memory_refresh wikiPageWikiLinkText ""refresh" the DRAM".
- Memory_refresh wikiPageWikiLinkText "DRAM refresh".
- Memory_refresh wikiPageWikiLinkText "Memory refresh".
- Memory_refresh wikiPageWikiLinkText "Memory refresh#INTERVAL".
- Memory_refresh wikiPageWikiLinkText "RAM refresh".
- Memory_refresh wikiPageWikiLinkText "memory refresh".
- Memory_refresh wikiPageWikiLinkText "refresh cycle".
- Memory_refresh wikiPageWikiLinkText "refresh cycles".
- Memory_refresh wikiPageWikiLinkText "refresh".
- Memory_refresh wikiPageWikiLinkText "refreshable memory".
- Memory_refresh wikiPageWikiLinkText "refreshed".
- Memory_refresh wikiPageWikiLinkText "refreshes".
- Memory_refresh wikiPageWikiLinkText "refreshing".
- Memory_refresh wikiPageWikiLinkText "rewriting".
- Memory_refresh wikiPageWikiLinkText "timeout".
- Memory_refresh hasPhotoCollection Memory_refresh.
- Memory_refresh wikiPageUsesTemplate Template:Anchor.
- Memory_refresh wikiPageUsesTemplate Template:DRAM.
- Memory_refresh wikiPageUsesTemplate Template:Main.
- Memory_refresh wikiPageUsesTemplate Template:Portal.
- Memory_refresh wikiPageUsesTemplate Template:Reflist.
- Memory_refresh subject Category:Computer_memory.
- Memory_refresh hypernym Process.
- Memory_refresh type Election.
- Memory_refresh type Array.
- Memory_refresh type Datum.
- Memory_refresh comment "Memory refresh is the process of periodically reading information from an area of computer memory and immediately rewriting the read information to the same area without modification, for the purpose of preserving the information.".
- Memory_refresh label "Memory refresh".
- Memory_refresh sameAs Refrescamiento_de_memoria.
- Memory_refresh sameAs Rafraîchissement_de_la_mémoire.
- Memory_refresh sameAs m.08vvkj.
- Memory_refresh sameAs Q6815755.
- Memory_refresh sameAs Q6815755.
- Memory_refresh wasDerivedFrom Memory_refresh?oldid=679039472.
- Memory_refresh isPrimaryTopicOf Memory_refresh.