DVD-R, DVD+R, DVD-RW, and DVD+RW ain’t got nothin’ on my man RAM. Oh yes, DVD-RAM, the format of mild obscurity which seems like it should have been friggin huge. Alas, it was but mildly useful.

On Technology Connections, we looked at this machine briefly when we explored the invention of magnetic recording technology.

Blu-ray vs. DVD DVD technology improved on previous formats, such as VHS and Laserdisc, in terms of the TV viewing and listening experience. Still, DVD isn't a high-definition format. Its ...