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A processor is an integrated electronic circuit that performs the calculations that run a computer. Random-access memory is a form of computer memory that can be read and changed in any order, typically used to store working data and machine code.

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.

Printing is a process for reproducing text and images using a master form or template. The earliest non-paper products involving printing include cylinder seals.

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.