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.

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 ...

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

[Alec] at Technology Connections has a bit of a love/hate relationship with these displays. The Numitron is simply a seven-segment display built from light bulb filaments.