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Humorous fictional type of computer memory
Write-only memory (WOM), the opposite of read-only memory (ROM), began as a humorous reference to a memory device that could be written to but not read
Write-only_memory_(joke)
Computing concept
In information technology, a write-only memory (WOM) is a memory location or register that can be written to but not read. In addition to its literal
Write-only memory (engineering)
Write-only_memory_(engineering)
Topics referred to by the same term
Write-only memory may refer to: Write-only memory (joke), a jocular term for a useless device Write-only memory (engineering), memory that cannot be read
Write-only_memory
Component that stores information
programs and data being actively processed, computer memory serves as a mass storage cache and write buffer to improve both reading and writing performance
Computer_memory
Type of computer memory
random-access memory (dynamic RAM or DRAM) is a type of random-access semiconductor memory that stores each bit of data in a memory cell. A DRAM memory cell usually
Dynamic_random-access_memory
Computer memory used for small quantities of data
or E2PROM (electrically erasable programmable read-only memory) is a type of non-volatile memory. It is used in computers, usually integrated in microcontrollers
EEPROM
Data storage device
which read and write data consecutively and therefore the data can only be accessed in the same sequence it was written. Semiconductor memory also has much
Semiconductor_memory
Serial communications protocol
individual selection of 65536 data items, and the operations of read or write of those items are designed to span multiple consecutive data items up to
Modbus
Self-correcting computer data storage
which may change the contents of one or more memory cells or interfere with the circuitry used to read or write to them. Hence, the error rates increase rapidly
ECC_memory
Type of concurrency control mechanism
In computer science and engineering, transactional memory attempts to simplify concurrent programming by allowing a group of load and store instructions
Transactional_memory
Type of computer memory used from 1955 to 1975
magnetic-core memory is a form of random-access memory. It predominated for roughly 20 years between 1955 and 1975, and is often just called core memory, or, informally
Magnetic-core_memory
Electronic non-volatile computer storage device
static RAM. A key disadvantage of flash memory is that it can endure only a relatively small number of write cycles in a specific block. NOR flash is
Flash_memory
capacitor memory. Though not suited for use as a directly-accessible computer memory, Flash memory has developed into a widely used form of read-write mass
Regenerative_capacitor_memory
Computer instruction set architecture
Store result Example of register-memory (CISC) Some register-memory machines cannot write ALU results to memory, only their registers. This is like an
Register–memory_architecture
Process for preserving information in DRAM
by the memory circuitry and is transparent to the user. While a refresh cycle is occurring, the memory is not available for normal read and write operations
Memory_refresh
featured a narrow memory window (the write voltage was only slightly higher than the read voltage). This defeated efforts to read and write multiple bits
Ferroelectric_flash_memory
Form of computer data storage
the memory, in contrast with other direct-access data storage media (such as hard disks and magnetic tape), where the time required to read and write data
Random-access_memory
Programming paradigm in which many processes are executed simultaneously
instruction fetch (IF), instruction decode (ID), execute (EX), memory access (MEM), and register write back (WB). The Pentium 4 processor had a 35-stage pipeline
Parallel_computing
Bit used in caches
of computer memory and indicates whether the corresponding block of memory has been modified. The dirty bit is set when the processor writes to (modifies)
Dirty_bit
Early type of computer memory
with recirculation times measured in microseconds. To read or write a particular memory address, it is necessary to wait for the signal representing its
Delay-line_memory
UNIX file system permission
way so only the file's owner, the directory's owner, or root user can rename or delete the file. Without the sticky bit set, any user with write and execute
Sticky_bit
Data structure
writes before they are added to the memory buffer. This ensures that no data is lost in the event of a crash during a write. As data accumulates across levels
Log-structured_merge-tree
Computer memory management scheme
modify the library's code, they use copy-on-write, so memory is only allocated when needed. Shared memory is an efficient means of communication between
Memory_paging
Discontinued computer memory type
as of 2019, with low write latency. As the memory was inherently fast and byte-addressable, techniques such as read-modify-write and caching used to enhance
3D_XPoint
Computer storage device with no moving parts
additional writes, known as write amplification, which must be managed to balance performance and durability. Most SSDs use non-volatile NAND flash memory for
Solid-state_drive
Hardware that translates virtual addresses to physical addresses
is not in physical memory, the MMU sends an interrupt to the operating system. The OS selects a lesser-used block in memory, writes it to backing storage
Memory_management_unit
Storage of digital data readable by computers
into read/write, slow-write/fast-read (e.g. CD-RW, SSD), write-once/read-many or WORM (e.g. programmable read-only memory, CD-R), read-only storage (e
Computer_data_storage
Device controlling access and addressing of memory
an integrated memory controller (IMC). Memory controllers contain the logic necessary to read and write to dynamic random-access memory (DRAM), and to
Memory_controller
Source available in-memory key–value database
an in-memory key–value database, used as a distributed cache and message broker, with optional durability. Because it holds all data in memory and because
Redis
Structure of file system that writes all information to a circular buffer
ever-increasing memory sizes on modern computers would lead to I/O becoming write-heavy since reads would be almost always satisfied from memory cache. A log-structured
Log-structured_file_system
Data storage device
currently in production. Some allow up to 100,000 write/erase cycles, depending on the exact type of memory chip used, and are thought to physically last
USB_flash_drive
Programmable machine that processes data
125 kHz clock waveforms and in the circuitry to read and write on its magnetic drum memory, so it was not the first completely transistorized computer
Computer
Computer architecture where code and data share a common bus
processing unit (CPU) and memory compared to the amount of memory. Because the single bus can only access one of the two classes of memory at a time, throughput
Von_Neumann_architecture
Transferring files between local devices
stick requires that the user be able to write to it. Audio and video files can be written directly to the memory card and then inserted into the mobile
Sideloading
Earliest electronic computer design
what was possible prior to vacuum tubes was the incorporation of large memories that could store thousands of bits of data and randomly access them at
Vacuum-tube_computer
Early solid state memory
The Intel 1103 is a dynamic random-access memory (DRAM) integrated circuit (IC) developed and fabricated by Intel. Introduced in October 1970, the 1103
Intel_1103
Tree data structure similar to B+ trees
balanced at all times, dancing trees only balance their nodes when flushing data to a disk (either because of memory constraints or because a transaction
Dancing_tree
Removable disk storage medium
a flexible plastic jacket. It was a read-only device used by IBM as a way of loading microcode. Read/write floppy disks and their drives became available
Floppy_disk
Model in software programming
memory or distributed transactions. Causal Consistency is “Available under Partition”, meaning that a process can read and write the memory (memory is
Causal_consistency
Anomaly in computer security and programming
a program writes data to a buffer beyond the buffer's allocated memory, overwriting adjacent memory locations. Buffers are areas of memory set aside to
Buffer_overflow
Novel type of computer memory
nonvolatile memory. FeRAM's advantages over Flash include: lower power usage, faster write speeds and a much greater maximum read/write endurance (about
Ferroelectric_RAM
Way to control memory access rights on a computer
specified area of memory, write accesses, or attempts to execute the contents of the area. An attempt to access unauthorized memory results in a hardware
Memory_protection
Computation model defining an abstract machine
sequential memory to store data. Typically, the sequential memory is represented as a tape of infinite length on which the machine can perform read and write operations
Turing_machine
General-purpose programming language
than either static memory or heap space, and dynamic memory allocation allows convenient allocation of objects whose size is known only at run time. Most
C_(programming_language)
Computer memory management technique
In computing, virtual memory, or virtual storage, is enabled by a memory management technique that provides an "idealized abstraction of the storage resources
Virtual_memory
Computer memory access architecture
addresses evenly across memory banks. That way, contiguous memory reads and writes use each memory bank in turn, resulting in higher memory throughput due to
Interleaved_memory
Guidance and navigation computer used in Apollo spacecraft
read-only memory known as core rope memory, fashioned by weaving wires through and around magnetic cores, though a small amount of read/write core memory is
Apollo_Guidance_Computer
Recordable optical disc specification
prior to the introduction of CD-R, unlike CD-RW discs. Originally named CD Write-Once (CD-WO), the CD-R format is specified in Part II of the Orange Book
CD-R
Hardware cache of a central processing unit
the main memory only when they are evicted from the cache. For this reason, a read miss in a write-back cache may sometimes require two memory accesses
CPU_cache
Mainframe computer by Control Data
typical program would first load data into memory (often using pre-rolled library code), process it, and then write it back out. This required the CPUs to
CDC_6600
1988 studio album by the Smithereens
Smithereens, released March 22, 1988 by Enigma/Capitol Records. The single, "Only a Memory", reached No. 92 on the Billboard Hot 100 and topped the Album Rock
Green_Thoughts
Electro-mechanical data storage device
inches (610 mm) in diameter. While the earlier IBM disk drives used only two read/write heads per arm, the 1301 used an array of 48 heads (comb), each array
Hard_disk_drive
Method of improving instruction-level parallelism
Instruction fetch Instruction decode and register fetch Execute Memory access Register write back The Atmel AVR and the PIC microcontroller each have a two-stage
Instruction_pipelining
Type of computer memory introduced 2014
Rate 4 Synchronous Dynamic Random-Access Memory (DDR4 SDRAM) is a type of synchronous dynamic random-access memory with a high-bandwidth ("double data rate")
DDR4_SDRAM
Memory card format
SmartMedia is an obsolete flash memory card standard owned by Toshiba, with capacities ranging from 0.5 MB to 128 MB. The format mostly saw application
SmartMedia
General-purpose programming language
compilers only began to produce accurate code two years later. Fortran computer programs have been written to support scientific and engineering applications
Fortran
Improving the efficiency of software
Computer Programming How To Write Fast Numerical Code: A Small Introduction "What Every Programmer Should Know About Memory" by Ulrich Drepper – explains
Program_optimization
When a system's behavior depends on timing of uncontrollable events
in which all memory accesses use only atomic operations. This can be dangerous because on many platforms, if two threads write to a memory location at
Race_condition
Minicomputer product line
themselves to read-write memory before execution, or They are placed into special ROM cards that provide a few words of read/write memory, accessed indirectly
PDP-8
Type of computer hardware interrupt
In particular, MSI allows the device to write a small amount of interrupt-describing data to a special memory-mapped I/O address, and the chipset then
Message_Signaled_Interrupts
Memory hierarchy concept applied to CPU caches with multiple levels
a write allocate or write no-allocate policy. Write allocate policy states that in case of a write miss, the block is fetched from the main memory and
Cache_hierarchy
IBM computer family (1964–1977)
only memory (ROM) inside the machine. Some models use microcode in the central processing unit (CPU) to implement instructions while others use only hardware
IBM_System/360
Reusable solution template to a commonly-needed software behavior
Weir, Charles; Noble, James (2000). Small Memory Software: Patterns for systems with limited memory. Addison–Wesley. ISBN 978-0-201-59607-6. Archived
Software_design_pattern
Signal to a computer processor emitted by hardware or software
(e.g., to read or write storage media). Software interrupts may also be triggered by program execution errors or by the virtual memory system. Typically
Interrupt
Instruction set architecture extension
from memory will not be added to the transaction read set. This means that, unless these memory locations were added to the transaction read or write sets
Transactional Synchronization Extensions
Transactional_Synchronization_Extensions
Type of command for solid-state drive
flash memory cells can be directly written to only when they are empty. If they happen to contain data, the contents must be erased before a write operation
Trim_(computing)
Data storage technology
RAID were conceived in the 1970s and 1980s: data striping to improve read/write efficiency, and disk mirroring or parity drives for data recovery. With
RAID
Cyberattack exploiting high-speed expansion ports
speed possible, by using direct hardware access to read or write directly to main memory without any operating system supervision or interaction. The
DMA_attack
Device that installs firmware on a device
burner, or PROM writer is a device that writes, a.k.a. burns, firmware to a target device's non-volatile memory. Typically, the target programmable chip
Programmer_(hardware)
Low-bandwidth computer motherboard bus
up to 6.67 MB/s. One of the slowest bus cycles is a simple memory read or write, where only 2 of the 17 clock cycles (plus any wait states imposed by the
Low_Pin_Count
Unexpected program exit due to an error
In early personal computers, attempting to write data to hardware addresses outside the system's main memory could cause hardware damage. Some crashes
Crash_(computing)
Generative AI chatbot by OpenAI
model DALL-E 3 was integrated into ChatGPT. The integration used ChatGPT to write prompts for DALL-E guided by conversations with users. In March 2025, OpenAI
ChatGPT
Programming language design principles
that aligns with the Zen of Python may save memory and run time of Python programs. The desire to write in Pythonic code has led to refactoring tools
Zen_of_Python
First electronic stored-program computer, 1948
length and a memory of 32 words (1 kibibit, 1,024 bits). As it was designed to be the simplest possible stored-program computer, the only arithmetic operations
Manchester_Baby
8-bit microprocessor
8008 has no provision to save its architectural state. The 8008 can only write to memory via an address in the HL register pair. When interrupted, there is
Intel_8008
Portable computer released by IBM in 1975
maintenance mode. In this mode it was possible to directly read and write RAM memory, video memory, CPU registers, interrupt vectors, clock counter, etc., using
IBM_5100
Instructions for the x86 microprocessors
encoding only supports the second input operand to be a memory operand. This allows any of the supported data types to be loaded from memory by the instruction
Advanced_Vector_Extensions
Instructions a computer can execute
the corresponding interpreter into memory and starts a process. The interpreter then loads the source code into memory to translate and execute each statement
Computer_program
Expansion bus standard
without queues, a "fire and forget" write transaction can be complete when it is received and before the actual memory write completes). With AGP's queued transactions
Accelerated_Graphics_Port
System property to handle growing work
networks, provide eventual consistency only, such as some NoSQL databases like CouchDB and others mentioned above. Write operations invalidate other copies
Scalability
Register that stores where in a program a processor is executing
allows the next instruction to be fetched from elsewhere in memory. A function call not only branches but saves the value of the PC. A return restores the
Program_counter
2026 film by Steven Spielberg
reconstructed Margaret's childhood home in order to recover suppressed memories. When they were ten, she and Daniel were simultaneously abducted by extraterrestrials
Disclosure_Day
General-purpose programming language
Rust's memory and type safety requirements, for example, that no two mutable references exist pointing to the same location. If programmers write code that
Rust_(programming_language)
Open-source file system
update file data. When a program writes data to a file, NOVA allocates some unused memory pages to hold the data and writes the data into them. Then, it appends
NOVA_(filesystem)
Open source distributed memory caching system
for daemon], or /ˈmɛmkæʃt/ MEM-cashed) is a general-purpose distributed memory-caching system. It is often used to speed up dynamic database-driven websites
Memcached
Novel type of computer memory
Resistive random-access memory (ReRAM or RRAM) is a type of non-volatile (NV) random-access (RAM) computer memory that works by changing the resistance
Resistive random-access memory
Resistive_random-access_memory
Indian actor, comedian, screenwriter, and producer (1937–2018)
industry in 1971, he was a professor of civil engineering in M. H. Saboo Siddik College of Engineering, Mumbai. Kader Khan was born in Kabul, Afghanistan
Kader_Khan
First electronic general-purpose digital computer
Engineering History. University of Pennsylvania. Retrieved May 17, 2016. Martin, Jason (December 17, 1998). "Past and Future Developments in Memory Design"
ENIAC
Disk-scheduling algorithm
to determine the motion of the disk's arm and head in servicing read and write requests. This algorithm is named after the behavior of a building elevator
Elevator_algorithm
Property of an algorithm
big O notation), but minimizes the writes to the original array and only requires a small amount of extra memory which is constant with respect to the
Algorithmic_efficiency
Novelty form of variant English spelling
identifier with which to mark memory or data. Hexadecimal notation represents numbers using the 16 digits 0123456789ABCDEF. Using only the letters ABCDEF it is
Hexspeak
Type of high performance DRAM graphics card memory
2009, Elpida Memory announced the opening of the company's Munich Design Center, responsible for Graphics DRAM (GDDR) design and engineering. Elpida received
GDDR5_SDRAM
Combinational digital circuit
instruction) or from memory. The ALU result may be written to any register in the register file (via the register file's write port) or to memory. In integer arithmetic
Arithmetic_logic_unit
High-density disk drive recording technology
to handle the drive, and only write sequentially to certain regions of the drive. While SMR drives can use DRAM, flash memory, and even a portion of their
Shingled_magnetic_recording
Allowing for contactless payments in credit and debit cards
cards. Memory cards contain non-volatile memory storage components, and perhaps some specific security logic. Contactless smart cards contain read-only RFID
Contactless_smart_card
other subsystems access to the minimum necessary portions of memory (and disable write access where appropriate), without the need to use separate address
Capability-based_addressing
Shared knowledge and values of a social group
Collective memory is the shared pool of memories, knowledge and information of a social group that is significantly associated with the group's identity
Collective_memory
Memory cell capable of storing more than a single bit of information
memory cell capable of storing more than a single bit of information, compared to a single-level cell (SLC), which can store only one bit per memory cell
Multi-level_cell
Computer networking protocol
Remote Direct Memory Access Protocol Specification is layered over Direct Data Placement Protocol (DDP). It defines how RDMA Send, Read, and Write operations
IWARP
Means of compressing an executable file
compressed executables decompress the original code in memory and most require slightly more memory to run (because they need to store the decompressor code
Executable_compression
WRITE ONLY-MEMORY-ENGINEERING
WRITE ONLY-MEMORY-ENGINEERING
Female
Hebrew
Variant spelling of Hebrew Orli, ORLY means "light is mine."
Surname or Lastname
English
English : variant spelling of Emery.
Girl/Female
Swedish Celtic
Strong.
Boy/Male
Australian, Portuguese
White; Blond; Fair-one
Male
English
Variant spelling of English Emery, EMORY means "work-power."
Girl/Female
British, Celtic, English, Irish, Swedish
From Britain; Exalted One; To Help
Female
English
English name derived from the vocabulary word, MELODY means "melody."
Male
Polish
Polish form of Greek Methodios, METODY means "method."
Surname or Lastname
English
English : variant of Embury or Emery.
Girl/Female
English American Welsh
Merry; mirthful; joyous. Also an abbreviation of Meredith.
Surname or Lastname
Americanized spelling of Dutch and North German Wriedt.English
Americanized spelling of Dutch and North German Wriedt.English : from Old English wride ‘twist’, ‘turn’, hence a topographic name for someone who lived by a winding stream, or perhaps a nickname for a devious man.
Male
Japanese
(守) Japanese name MAMORU means "protector."
Surname or Lastname
English
English : occupational name for a copier of manuscripts, Old English wrītere.
Girl/Female
Bengali, Indian
Season
Boy/Male
British, English
Guard
Girl/Female
British, English
Bright; Pure; Name of Colour
Surname or Lastname
English
English : habitational name from Onley or Olney in Northamptonshire, possibly also from Onneley in Staffordshire. Like Olney, Onley was named in Old English as ‘lonely (Äna, from Än ‘one’) glade (lÄ“ah)’; Onneley has the same second element, and possibly the same initial one, though this may alternatively have been a personal name, Onna.
Surname or Lastname
English
English : occupational name for a watchman, Anglo-Norman French waite (of Germanic origin; compare Wachter), or from the same word in its original abstract/collective sense, ‘the watch’. There may also have been some late confusion with White.
Girl/Female
English American Greek
Melody.
Surname or Lastname
English, Scottish, and Irish
English, Scottish, and Irish : from Middle English whit ‘white’, hence a nickname for someone with white hair or an unnaturally pale complexion. In some cases it represents a Middle English personal name, from an Old English byname, Hwīt(a), of this origin. As a Scottish and Irish surname it has been widely used as a translation of the many Gaelic names based on bán ‘white’ (see Bain 1) or fionn ‘fair’ (see Finn 1). There has also been some confusion with Wight.Translated form of cognate and equivalent names in other languages, such as German Weiss, French Blanc, Polish Białas (see Bialas), etc.Peregrine White (1620–1704), brother of Resolved, was born in Cape Cod harbor on board the Mayflower, thus becoming the first child of English descent to be born in New England. His father, William White, was the son of the rector of Barham, near Ipswich, Suffolk, England; he died in 1621 during the first winter at Plymouth Colony.
WRITE ONLY-MEMORY-ENGINEERING
WRITE ONLY-MEMORY-ENGINEERING
Girl/Female
Indian
Meadow of ash trees, Ash wood
Boy/Male
Indian, Sanskrit
Bearer of Rays; Luminous; The Moon
Girl/Female
Gujarati, Hindu, Indian
Constant Flow; The Earth
Boy/Male
Gujarati, Hindu, Indian, Kannada, Sanskrit, Tamil, Telugu
As Hard as Wood
Boy/Male
Native American
Short.
Boy/Male
Hindu
Braided hair, Name of a river
Boy/Male
Muslim
Noble. Outstanding.
Boy/Male
Tamil
Ilanthirayan | இலாநà¯à®¤à®¿à®°à®¾à®¯à®£
Young Man whose influence extends beyond the seas
Boy/Male
Greek, Indian, Swedish
Victory; Useful; Bringer of Victory
Boy/Male
Polynesian
Little trees.
WRITE ONLY-MEMORY-ENGINEERING
WRITE ONLY-MEMORY-ENGINEERING
WRITE ONLY-MEMORY-ENGINEERING
WRITE ONLY-MEMORY-ENGINEERING
WRITE ONLY-MEMORY-ENGINEERING
n.
A white pigment; as, Venice white.
v. t.
To set down for reading; to express in legible or intelligible characters; to inscribe; as, to write a deed; to write a bill of divorcement; hence, specifically, to set down in an epistle; to communicate by letter.
v. t.
To set down, as legible characters; to form the conveyance of meaning; to inscribe on any material by a suitable instrument; as, to write the characters called letters; to write figures.
n.
Alt. of Memoirs
a.
Alone in its class; by itself; not associated with others of the same class or kind; as, an only child.
Archaic imp. & p. p.
of Write
n.
The time within which past events can be or are remembered; as, within the memory of man.
n.
The actual and distinct retention and recognition of past ideas in the mind; remembrance; as, in memory of youth; memories of foreign lands.
n.
Memory.
obs.
3d pers. sing. pres. of Write, for writeth.
a.
Singly; without more; as, only-begotten.
n.
A memorial account; a history composed from personal experience and memory; an account of transactions or events (usually written in familiar style) as they are remembered by the writer. See History, 2.
n.
Something, or an aggregate of things, remembered; hence, character, conduct, etc., as preserved in remembrance, history, or tradition; posthumous fame; as, the war became only a memory.
imp.
of Write
a.
One alone; single; as, the only man present; his only occupation.
n.
The reach and positiveness with which a person can remember; the strength and trustworthiness of one's power to reach and represent or to recall the past; as, his memory was never wrong.
a.
See Only.