Computer memory that loses its contents when unpowered
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Computer memory and Computer data storage types
General
Memory cell
Memory coherence
Cache coherence
Memory hierarchy
Memory access pattern
Memory map
Secondary storage
MOS memory
floating-gate
Continuous availability
Areal density (computer storage)
Block (data storage)
Object storage
Direct-attached storage
Network-attached storage
Storage area network
Block-level storage
Single-instance storage
Data
Structured data
Unstructured data
Big data
Metadata
Data compression
Data corruption
Data cleansing
Data degradation
Data integrity
Data security
Data validation
Data validation and reconciliation
Data recovery
Storage
Data cluster
Directory
Shared resource
File sharing
File system
Clustered file system
Distributed file system
Distributed file system for cloud
Distributed data store
Distributed database
Database
Data bank
Data storage
Data store
Data deduplication
Data structure
Data redundancy
Replication (computing)
Memory refresh
Storage record
Information repository
Knowledge base
Computer file
Object file
File deletion
File copying
Backup
Core dump
Hex dump
Data communication
Information transfer
Temporary file
Copy protection
Digital rights management
Volume (computing)
Boot sector
Master boot record
Volume boot record
Disk array
Disk image
Disk mirroring
Disk aggregation
Disk partitioning
Memory segmentation
Locality of reference
Logical disk
Storage virtualization
Virtual memory
Memory-mapped file
Software entropy
Software rot
In-memory database
In-memory processing
Persistence (computer science)
Persistent data structure
RAID
Non-RAID drive architectures
Memory paging
Bank switching
Grid computing
Cloud computing
Cloud storage
Fog computing
Edge computing
Dew computing
Amdahl's law
Moore's law
Kryder's law
Volatile
RAM
Hardware cache
CPU cache
Scratchpad memory
DRAM
eDRAM
SDRAM
SGRAM
LPDDR
QDRSRAM
EDO DRAM
XDR DRAM
RDRAM
DDR
GDDR
HBM
SRAM
1T-SRAM
ReRAM
QRAM
Content-addressable memory (CAM)
Computational RAM
VRAM
Dual-ported RAM
Video RAM (dual-ported DRAM)
Historical
Williams–Kilburn tube (1946–1947)
Delay-line memory (1947)
Mellon optical memory (1951)
Selectron tube (1952)
Dekatron
T-RAM (2009)
Z-RAM (2002–2010)
Non-volatile
ROM
Diode matrix
MROM
PROM
EPROM
EEPROM
ROM cartridge
Solid-state storage (SSS)
Flash memory is used in:
Solid-state drive (SSD)
Solid-state hybrid drive (SSHD)
USB flash drive
IBM FlashSystem
Flash Core Module
Memory card
Memory Stick
CompactFlash
PC Card
MultiMediaCard
SD card
SIM card
SmartMedia
Universal Flash Storage
SxS
MicroP2
XQD card
Programmable metallization cell
NVRAM
Memistor
Memristor
PCM (3D XPoint)
MRAM
Electrochemical RAM (ECRAM)
Nano-RAM
CBRAM
Early-stage NVRAM
FeRAM
ReRAM
FeFET memory
Analog recording
Phonograph cylinder
Phonograph record
Quadruplex videotape
Vision Electronic Recording Apparatus
Magnetic recording
Magnetic storage
Magnetic tape
Magnetic-tape data storage
Tape drive
Tape library
Digital Data Storage (DDS)
Videotape
Videocassette
Cassette tape
Linear Tape-Open
Betamax
8 mm video format
DV
MiniDV
MicroMV
U-matic
VHS
S-VHS
VHS-C
D-VHS
Hard disk drive
Optical
3D optical data storage
Optical disc
LaserDisc
Compact Disc Digital Audio (CDDA)
CD
CD Video
CD-R
CD-RW
Video CD
Super Video CD
Mini CD
Nintendo optical discs
CD-ROM
Hyper CD-ROM
DVD
DVD+R
DVD-Video
DVD card
DVD-RAM
MiniDVD
HD DVD
Blu-ray
Ultra HD Blu-ray
Holographic Versatile Disc
WORM
In development
CBRAM
Racetrack memory
NRAM
Millipede memory
ECRAM
Patterned media
Holographic data storage
Electronic quantum holography
5D optical data storage
DNA digital data storage
Universal memory
Time crystal
Quantum memory
UltraRAM
Historical
Paper data storage (1725)
Punched card (1725)
Punched tape (1725)
Plugboard
Drum memory (1932)
Magnetic-core memory (1949)
Plated-wire memory (1957)
Core rope memory (1960s)
Thin-film memory (1962)
Disk pack (1962)
Twistor memory (~1968)
Bubble memory (~1970)
Floppy disk (1971)
v
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e
Volatile memory, in contrast to non-volatile memory, is computer memory that requires power to maintain the stored information; it retains its contents while powered on but when the power is interrupted, the stored data is quickly lost.
Volatile memory has several uses including as primary storage. In addition to usually being faster than forms of mass storage such as a hard disk drive, volatility can protect sensitive information, as it becomes unavailable on power-down. Most general-purpose random-access memory (RAM) is volatile.[1]
^"What is volatile memory? - Definition from WhatIs.com". WhatIs.com.
Volatilememory, in contrast to non-volatilememory, is computer memory that requires power to maintain the stored information; it retains its contents...
semiconductor memory: volatile and non-volatile. Examples of non-volatilememory are flash memory and ROM, PROM, EPROM and EEPROM memory. Examples of volatile memory...
NVM Express (NVMe) or Non-VolatileMemory Host Controller Interface Specification (NVMHCIS) is an open, logical-device interface specification for accessing...
non-volatile (retaining contents when powered down). Historically, memory has, depending on technology, been called central memory, core memory, core...
and a MOS capacitor per cell. Non-volatilememory (such as EPROM, EEPROM and flash memory) uses floating-gate memory cells, which consist of a single floating-gate...
or E2PROM (electrically erasable programmable read-only memory) is a type of non-volatilememory. It is used in computers, usually integrated in microcontrollers...
programmable) memory is a special type of non-volatilememory (NVM) that permits data to be written to memory only once. Once the memory has been programmed...
Look up volatility or volatile in Wiktionary, the free dictionary. Volatility or volatile may refer to: Volatility (chemistry), a measuring tendency of...
Flash memory is an electronic non-volatile computer memory storage medium that can be electrically erased and reprogrammed. The two main types of flash...
battery when system and standby power is off. It is referred to as non-volatilememory or NVRAM because, after the system loses power, it does retain state...
data storage Recording format Semiconductor memory Software-defined storage Telecommunication Volatilememory Visual arts Gilbert, Walter (Feb 1986). "The...
execution. In C and C++, the volatile keyword was intended to allow C and C++ programs to directly access memory-mapped I/O. Memory-mapped I/O generally requires...
read-only memory, is a type of programmable read-only memory (PROM) chip that retains its data when its power supply is switched off. Computer memory that...
data even when not powered, as opposed to volatilememory. non-volatile random-access memory Random-access memory (RAM) that retains its data when power...
Magnetoresistive random-access memory (MRAM) is a type of non-volatile random-access memory which stores data in magnetic domains. Developed in the mid-1980s...
3D XPoint (pronounced three-D cross point) is a discontinued non-volatilememory (NVM) technology developed jointly by Intel and Micron Technology. It...
approved by the non-volatile-memory subcommittee of JEDEC. The goal of the specification is the interchangeability of flash memory devices offered by different...
Core rope memory is a form of read-only memory (ROM) for computers. It was used in the UNIVAC I (Universal Automatic Computer I) and the UNIVAC II, developed...
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