Magnetic recording was invented in 1898 by Valdemar Poulson of Denmark. But it wasn’t used for recording music. Called the “telegraphone,” it […]

In the early 1990s two high density optical storage standards were being developed: one was the MultiMedia Compact Disc (MMCD), backed by […]

Blu-ray, DVD+R, DVD+RW, DVD-RAM, DVD-R, DVD-RW, DVD-ROM; which format is compatible with your system? BLU-RAY Developed by Sony, Blu-ray Disc (BD) is […]

A DVD-Recordable or DVD-R is an optical disc with a larger storage capacity than a CD-R, typically 4.7 GB (4.38 GB) instead […]

Traditional television sets have a 4:3 aspect ratio. Widescreen television sets have a 16:9 aspect ratio. Based upon pixel resolution, color resolution, […]