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An ink cartridge or inkjet cartridge is a component of an inkjet printer that contains the ink that is deposited onto paper during printing. Each ink cartridge contains one or more ink reservoirs; certain producers also add electronic contacts and a chip that communicates with the printer.

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.

A computer is a machine that can be instructed to carry out sequences of arithmetic or logical operations automatically via computer programming.

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.