paging or swapping. Computer memory is divided into pages so that information can be found more quickly. The concept is named by analogy to the pages...
21 KB (2,108 words) - 17:14, 20 May 2025
In computer operating systems, memory paging is a memory management scheme that allows the physical memory used by a program to be non-contiguous. This...
43 KB (5,453 words) - 17:18, 20 May 2025
users of a very large (main) memory". The computer's operating system, using a combination of hardware and software, maps memory addresses used by a program...
43 KB (5,336 words) - 13:44, 5 June 2025
Computer memory stores information, such as data and programs, for immediate use in the computer. The term memory is often synonymous with the terms RAM...
29 KB (3,284 words) - 22:21, 18 April 2025
In computer science, thrashing occurs in a system with virtual memory when a computer's real storage resources are overcommitted, leading to a constant...
11 KB (1,591 words) - 13:49, 11 November 2024
A page table is a data structure used by a virtual memory system in a computer to store mappings between virtual addresses and physical addresses. Virtual...
17 KB (2,462 words) - 20:30, 8 April 2025
the CPU and memory, while the latter performs arithmetic and logical operations on data. Without a significant amount of memory, a computer would merely...
57 KB (6,541 words) - 01:42, 18 June 2025
A memory management unit (MMU), sometimes called paged memory management unit (PMMU), is a computer hardware unit that examines all references to memory...
49 KB (7,099 words) - 18:50, 8 May 2025
is the main memory (colloquially called the RAM) in modern computers and graphics cards (where the main memory is called the graphics memory). It is also...
92 KB (11,072 words) - 14:02, 6 June 2025
that stores a memory address. This can be that of another value located in computer memory, or in some cases, that of memory-mapped computer hardware. A...
72 KB (9,678 words) - 04:54, 20 March 2025
1960s as computer memory. Many early computers, called drum computers or drum machines, used drum memory as the main working memory of the computer. Some...
10 KB (1,234 words) - 22:29, 24 September 2024
In computing, a page fault is an exception that the memory management unit (MMU) raises when a process accesses a memory page without proper preparations...
8 KB (1,162 words) - 12:18, 19 May 2025
applied to computer memory. The essential requirement of memory management is to provide ways to dynamically allocate portions of memory to programs...
26 KB (3,004 words) - 04:20, 2 June 2025
In a computer operating system that uses paging for virtual memory management, page replacement algorithms decide which memory pages to page out, sometimes...
47 KB (6,235 words) - 18:13, 20 April 2025
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...
7 KB (698 words) - 17:15, 21 September 2024
Memory segmentation is an operating system memory management technique of dividing a computer's primary memory into segments or sections. In a computer...
19 KB (2,337 words) - 15:49, 23 May 2025
Memory protection is a way to control memory access rights on a computer, and is a part of most modern instruction set architectures and operating systems...
18 KB (2,268 words) - 16:46, 24 January 2025
Valley Page (computer memory), a block of virtual memory Paging, a method of data retrieval Bank switching, sometimes known as paging Electronic page, formatting...
4 KB (576 words) - 02:11, 16 June 2025
Semiconductor memory is a digital electronic semiconductor device used for digital data storage, such as computer memory. It typically refers to devices...
36 KB (3,551 words) - 15:24, 11 February 2025
Random-access memory (RAM; /ræm/) is a form of electronic computer memory that can be read and changed in any order, typically used to store working data...
58 KB (5,812 words) - 21:59, 11 June 2025
In computer architecture, the memory hierarchy separates computer storage into a hierarchy based on response time. Since response time, complexity, and...
12 KB (1,204 words) - 23:21, 8 March 2025
In computer science, shared memory is memory that may be simultaneously accessed by multiple programs with an intent to provide communication among them...
11 KB (1,301 words) - 20:25, 2 March 2025
The zero page or base page is the block of memory at the very beginning of a computer's address space; that is, the page whose starting address is zero...
12 KB (1,404 words) - 00:01, 27 December 2024
In computer operating systems, demand paging (as opposed to anticipatory paging) is a method of virtual memory management. In a system that uses demand...
4 KB (533 words) - 04:56, 13 June 2025
decrease or increase the number of pages in its "balloon", causing the host computer to remap or unmap physical memory to the VM, as-needed. Savill, John...
2 KB (241 words) - 01:01, 9 May 2024
the initial processor instructions required to bootstrap a computer system. Read-write memory such as NVRAM can be used to store calibration constants,...
18 KB (2,392 words) - 15:40, 8 May 2025
form of a microprocessor, together with some type of computer memory, typically semiconductor memory chips. The processing element carries out arithmetic...
140 KB (14,125 words) - 23:29, 1 June 2025
language constructs often treat the memory like an array. A digital computer's main memory consists of many memory locations, each identified by a unique...
18 KB (2,257 words) - 20:42, 30 May 2025
Read-only memory (ROM) is a type of non-volatile memory used in computers and other electronic devices. Data stored in ROM cannot be electronically modified...
50 KB (5,727 words) - 18:18, 25 May 2025
Error correction code memory (ECC memory) is a type of computer data storage that uses an error correction code (ECC) to detect and correct n-bit data...
30 KB (3,338 words) - 12:06, 12 June 2025