D

DDR SDRAM

Generic DDR-266 Memory in the 184pin DIMM form

DDR SDRAM (double-data-rate synchronous dynamic random access memory) is a class of memory integrated circuits used in computers. It achieves nearly twice the bandwidth of the preceding “single data rate” SDRAM by double pumping (transferring data on the rising and falling edges of the clock signal) without increasing the clock frequency.
With data being transferred 64… »

DC power

Direct current (DC) is the unidirectional flow of electric charge. Direct current is produced by such sources as batteries, thermocouples, solar cells, and commutator-type electric machines of the dynamo type. Direct current may flow in a conductor such as a wire, but can also be through semiconductors, insulators, or even through a vacuum as in… »

DAT

DAT : Digital audiotape; A type of computer backup drive that copies data to a… »

decoder

A device or program that translates encoded data into its original format (e.g., it decodes the data). The term is often used in reference to MPEG-2 video and sound data, which must be decoded before it is output. Most DVD players, for example, include a decoder card whose sole function is to decode MPEG data…. »

decode

Decode refers to reversing the process of an encoding method. Data that has been encoded for storage or transmission is usually decoded for use and playback. Also see decoder, a device or program that translates encoded data into its original format.
Contrast with… »