Thursday, September 23, 2010

word definition

Double data rate synchronous dynamic random access memory (DDR SDRAM) is a class of memory integrated circuits used in computers.


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. Since real capacitors leak charge, the information eventually fades unless the capacitor charge is refreshed periodically. Because of this refresh requirement, it is a dynamic memory as opposed to SRAM and other static memory.


SGRAM

Abbreviation of Synchronous Graphic Random Access Memory, a type of DRAM used increasingly on video adapters and graphics accelerators. Like SDRAM, SGRAM can synchronize itself with the CPU bus clock up to speeds of 100 MHz. In addition, SGRAM uses several other techniques, such as masked writes and block writes, to increase bandwidth for graphics-intensive functions.


DRAM

Pronounced dee-ram, DRAM stands for dynamic random access memory, a type of memory used in most personal computers.

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