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Compact disc is a digital optical disc data storage format that was co-developed by Philips and Sony and released in 1982. The format was originally developed to store and play only sound recordings but was later adapted for storage of data. DVD is a digital optical disc storage format invented and developed in 1995 and released in late 1996. The medium can store any kind of digital data

A Graphics Card is a piece of computer hardware that produces the image you see on a monitor. A sound card is an internal expansion card that provides input and output of audio signals to and from a computer under control of computer programs. A TV tuner card is a kind of television tuner that allows television signals to be received by a computer.

An MP3 player is an electronic device that can play MP3 digital audio files. It is a type of digital audio player, or portable media player.

A fax roll is a type of fax paper. The paper is made of thermal paper, similar to the type of paper found in receipt printers on cash registers.