CD
Definition:
CD stands for Compact Disc and is a popular medium for music. Music on a CD is stored digitally. Playing a CD requires a CD player or other device, such as a computer, with a CD drive.
Certain types of writeable CDs can be used by computers to store data.
Here's a word you may not know...
progressive scan
Progessive scan is a method for "painting" a video signal by displaying video lines sequentially (progressively) from top to bottom. This is in contrast to the alternating odd/even method used with an
interlaced signal. Progressive scan signals are considered superior to interlaces signals due to their scalability for high definition displays and the absence of quirks sometimes associated with interlaced signals.