DVD

Definition:

DVD stands for Digital Video Disc and is a popular medium for movies. Movies on a DVD are stored digitally. Playing a DVD requires a DVD player or other device, such as a computer, with a DVD drive. DVDs can hold 6-7 times the amount of information as their same-sized counterpart, the CD.

Certain types of writeable DVDs can be used by computers to store data.

Here's a word you may not know...

DRAM

DRAM stands for dynamic random access memory. The dynamic nature of DRAM means it needs to be refreshed periodically. This is in contrast to SRAM or static memory which does not need to be refreshed periodically. DRAM is considered to have an advantage over SRAM in that it requires fewer transistors than its SRAM counterpart.