video random-access memory - meaning and definition. What is video random-access memory
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What (who) is video random-access memory - definition

FORM OF COMPUTER DATA STORAGE
R.A.M.; Shadow Random Access Memory; Memory wall; Shadow ram; Shadow RAM; Shadow random access memory; Random-Access Memory; RAM chip; Random Access Memory; RAM (memory); Sigmaquad; Random access memory; Single sided RAM; Single-sided RAM; Single sided random access memory; Single-sided random access memory; RAM memory; Computer RAM memory; RAM; Memory bottleneck; History of random-access memory; RAM IC; RAM stick
  • VEB Carl Zeiss Jena]] in 1989
  • DRAM Cell (1 Transistor and one capacitor)
  • These IBM [[tabulating machine]]s from the mid-1930s used [[mechanical counter]]s to store information
  • memory core iron rings]]
  • heatsink]]
  • SRAM Cell (6 Transistors)
  • desktop RAM]].
  • server]]s.

video random-access memory      
<hardware> (VRAM) Fast memory designed for storing the image to be displayed on a computer's monitor. VRAM may be built from special memory integrated circuits designed to be accessed sequentially. VRAM must be fast enough to supply data to the display electronics at the speed at which the screen is scanned. Thus for example, for a resolution of 1280x1024 eight-bit pixels at a refresh rate of 70 Hz, the video memory would need to supply 1280x1024x70 = 90 Mbyte/s or one byte every 11 ns. The VRAM may be dual ported in order to allow the display electronics and the CPU to access it at the same time. In an IBM PC the VRAM is located on the display interface card and 0.5 - 2 MB is typical. A VRAM Song (http://fweep.com/vram.html)! (2001-02-14)
MDRAM         
  • [[MoSys]] MDRAM MD908
  • accessdate=2022-03-09}}</ref> (lower edge, right of middle).
  • 1 Mbit high speed [[CMOS]] pseudo static RAM, made by [[Toshiba]]
  • NMOS]] DRAM cell. It was patented in 1968.
  • die]] of a Samsung DDR-SDRAM 64MBit package
  • Inside a Samsung GDDR3 256&nbsp;MBit package
  • A 512 MBit [[Qimonda]] GDDR3 SDRAM package
  • Writing to a DRAM cell
RANDOM-ACCESS MEMORY THAT STORES EACH BIT OF DATA IN A SEPARATE CAPACITOR WITHIN AN INTEGRATED CIRCUIT
DRAM (memory); Pseudostatic RAM; PSRAM; Pseudostatic Random Access Memory; Window RAM; Dynamic RAM; EDO RAM; Fast Page Mode DRAM; FPM RAM; FPM DRAM; Fast Page Mode RAM; BEDO (RAM); MDRAM; Row Access Strobe; Column Access Strobe; CAS access time; Precharge interval; Row address select; Column address select; 1T DRAM; DDRAM; D-RAM; EDO DRAM; Fast page mode; Page mode memory; Extended Data Out RAM; BEDO RAM; Burst EDO; Multibank DRAM; Intel 1102; Burst EDO DRAM; Memory Timing; Dynamic Random Access Memory; FPRAM; Dynamic random access memory; Extended data out DRAM; Extended Data Out DRAM; Dynamic Random access memory; Static column RAM; Memory row; DRAM row; Row activation; WRAM (memory); 1T1C; 1t1c; 3T1C; Page mode RAM; Page mode DRAM; DRAM; D. R. A. M.; D.R.A.M.; DRAM memory; Asynchronous DRAM; EDO memory; Fast page mode DRAM; Window DRAM; Video DRAM; Nibble mode; EDO SGRAM
Multibank Dynamic Random Access Memory (Reference: RAM, DRAM, IC)
FPM DRAM         
  • [[MoSys]] MDRAM MD908
  • accessdate=2022-03-09}}</ref> (lower edge, right of middle).
  • 1 Mbit high speed [[CMOS]] pseudo static RAM, made by [[Toshiba]]
  • NMOS]] DRAM cell. It was patented in 1968.
  • die]] of a Samsung DDR-SDRAM 64MBit package
  • Inside a Samsung GDDR3 256&nbsp;MBit package
  • A 512 MBit [[Qimonda]] GDDR3 SDRAM package
  • Writing to a DRAM cell
RANDOM-ACCESS MEMORY THAT STORES EACH BIT OF DATA IN A SEPARATE CAPACITOR WITHIN AN INTEGRATED CIRCUIT
DRAM (memory); Pseudostatic RAM; PSRAM; Pseudostatic Random Access Memory; Window RAM; Dynamic RAM; EDO RAM; Fast Page Mode DRAM; FPM RAM; FPM DRAM; Fast Page Mode RAM; BEDO (RAM); MDRAM; Row Access Strobe; Column Access Strobe; CAS access time; Precharge interval; Row address select; Column address select; 1T DRAM; DDRAM; D-RAM; EDO DRAM; Fast page mode; Page mode memory; Extended Data Out RAM; BEDO RAM; Burst EDO; Multibank DRAM; Intel 1102; Burst EDO DRAM; Memory Timing; Dynamic Random Access Memory; FPRAM; Dynamic random access memory; Extended data out DRAM; Extended Data Out DRAM; Dynamic Random access memory; Static column RAM; Memory row; DRAM row; Row activation; WRAM (memory); 1T1C; 1t1c; 3T1C; Page mode RAM; Page mode DRAM; DRAM; D. R. A. M.; D.R.A.M.; DRAM memory; Asynchronous DRAM; EDO memory; Fast page mode DRAM; Window DRAM; Video DRAM; Nibble mode; EDO SGRAM
Fast Page Mode Dynamic Random Access Memory

Wikipedia

Random-access memory

Random-access memory (RAM; ) is a form of computer memory that can be read and changed in any order, typically used to store working data and machine code. A random-access memory device allows data items to be read or written in almost the same amount of time irrespective of the physical location of data inside the memory, in contrast with other direct-access data storage media (such as hard disks, CD-RWs, DVD-RWs and the older magnetic tapes and drum memory), where the time required to read and write data items varies significantly depending on their physical locations on the recording medium, due to mechanical limitations such as media rotation speeds and arm movement.

RAM contains multiplexing and demultiplexing circuitry, to connect the data lines to the addressed storage for reading or writing the entry. Usually more than one bit of storage is accessed by the same address, and RAM devices often have multiple data lines and are said to be "8-bit" or "16-bit", etc. devices.

In today's technology, random-access memory takes the form of integrated circuit (IC) chips with MOS (metal–oxide–semiconductor) memory cells. RAM is normally associated with volatile types of memory where stored information is lost if power is removed. The two main types of volatile random-access semiconductor memory are static random-access memory (SRAM) and dynamic random-access memory (DRAM).

Non-volatile RAM has also been developed and other types of non-volatile memories allow random access for read operations, but either do not allow write operations or have other kinds of limitations on them. These include most types of ROM and a type of flash memory called NOR-Flash.

Use of semiconductor RAM dated back to 1965, when IBM introduced the monolithic (single-chip) 16-bit SP95 SRAM chip for their System/360 Model 95 computer, and Toshiba used discrete DRAM memory cells for its 180-bit Toscal BC-1411 electronic calculator, both based on bipolar transistors. While it offered higher speeds than magnetic-core memory, bipolar DRAM could not compete with the lower price of the then-dominant magnetic-core memory.

MOS memory, based on MOS transistors, was developed in the late 1960s, and was the basis for all early commercial semiconductor memory. The first commercial DRAM IC chip, the 1K Intel 1103, was introduced in October 1970.

Synchronous dynamic random-access memory (SDRAM) later debuted with the Samsung KM48SL2000 chip in 1992.

https://en.wikipedia.org/wiki/RAM
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