Flashcards: Computer memory

Content-addressable memory (CAM) is a special type of computer memory used in certain very-high-speed searching applications.

Logical block addressing (LBA) is a common scheme used for specifying the location of blocks of data stored on computer storage devices, generally secondary storage systems such as hard disk drives.

In the fields of digital electronics and computer hardware, multi-channel memory architecture is a technology that increases the data transfer rate between the DRAM memory and the memory controller by adding more channels of communication between them.

(This article is about video game console hardware. For the standard airspeed term, see V speeds.) The Visual Memory Unit (VMU), also referred to as the Visual Memory (ビジュアルメモリ Bijuaru Memori) (VM) in Japan and Europe, is the primary memory card produced by Sega for the Dreamcast home video game console.

In computer science, a data buffer (or just buffer) is a region of a physical memory storage used to temporarily store data while it is being moved from one place to another.

Dynamic random-access memory (DRAM) is a type of random-access memory that stores each bit of data in a separate capacitor within an integrated circuit.

An EPROM (rarely EROM), or erasable programmable read-only memory, is a type of memory chip that retains its data when its power supply is switched off.

In electronics, a flip-flop or latch is a circuit that has two stable states and can be used to store state information.

Holographic data storage is a potential technology in the area of high-capacity data storage currently dominated by magnetic data storage and conventional optical data storage.

A programmable read-only memory (PROM) or field programmable read-only memory (FPROM) or one-time programmable non-volatile memory (OTP NVM) is a form of digital memory where the setting of each bit is locked by a fuse or antifuse.

Random-access memory (RAM /ræm/) is a form of computer data storage.

Static random-access memory (static RAM or SRAM) is a type of semiconductor memory that uses bistable latching circuitry (flip-flop) to store each bit.

Uniform memory access (UMA) is a shared memory architecture used in parallel computers.

A Translation lookaside buffer (TLB) is a memory cache that is used to reduce the time taken to access a user memory location.

In computer security and programming, a buffer overflow, or buffer overrun, is an anomaly where a program, while writing data to a buffer, overruns the buffer's boundary and overwrites adjacent memory locations.

EEPROM (also written E2PROM and pronounced "e-e-prom", "double-e-prom" or "e-squared-prom") stands for electrically erasable programmable read-only memory and is a type of non-volatile memory used in computers and other electronic devices to store relatively small amounts of data but allowing individual bytes to be erased and reprogrammed.

In computing, Native Command Queuing (NCQ) is an extension of the Serial ATA protocol allowing hard disk drives to internally optimize the order in which received read and write commands are executed.

A solid-state drive (SSD, also known as a solid-state disk) is a solid-state storage device that uses integrated circuit assemblies as memory to store data persistently.

A tape drive is a data storage device that reads and writes data on a magnetic tape.

Bubble memory is a type of non-volatile computer memory that uses a thin film of a magnetic material to hold small magnetized areas, known as bubbles or domains, each storing one bit of data.

Drum memory was a magnetic data storage device invented by Gustav Tauschek in 1932 in Austria.

In computing, memory address is a data concept used at various levels by software and hardware to access the computer's primary storage memory.

In electronics and computing, a soft error is a type of error where a signal or datum is wrong.

In computing, PEEK is a BASIC programming language extension used for reading the contents of a memory cell at a specified address.

Semiconductor memory is an electronic data storage device, often used as computer memory, implemented on a semiconductor-based integrated circuit.

Cache pollution describes situations where an executing computer program loads data into CPU cache unnecessarily, thus causing other useful data to be evicted from the cache into lower levels of the memory hierarchy, degrading performance.

An in-memory database (IMDB; also main memory database system or MMDB or memory resident database) is a database management system that primarily relies on main memory for computer data storage.

In digital circuits, a shift register is a cascade of flip flops, sharing the same clock, in which the output of each flip-flop is connected to the 'data' input of the next flip-flop in the chain, resulting in a circuit that shifts by one position the 'bit array' stored in it, 'shifting in' the data present at its input and 'shifting out' the last bit in the array, at each transition of the clock input.

A memory barrier, also known as a membar, memory fence or fence instruction, is a type of barrier instruction that causes a central processing unit (CPU) or compiler to enforce an ordering constraint on memory operations issued before and after the barrier instruction.

In electronic digital computers, there are different limitations on the usable memory address space.

Memory ordering describes the order of accesses to computer memory by a CPU.