(programming) A language that is used internally by computers, including programming languages, machine languages, query languages, markup languages etc.

(computer hardware) The conceptual structure around which a given computer is designed. / (computer hardware) The science of computer design.

(dated) A small computer, built around a microprocessor, for use by one person at a time.

(computing, mathematics) a formal theory of computability

(computing) The representation and manipulation of pictorial data by a computer. / (computing) The various technologies used to create and manipulate such pictorial data.

(computing) A program which can covertly transmit itself between computers via networks (especially the Internet) or removable storage such as disks and USB drives, often causing damage to systems and data.

The study of computers and their architecture, languages, and applications, in all aspects, as well as the mathematical structures that relate to computers and computation.

An electronic game, especially a game played using a general-purpose computer (as opposed to a game console).

A computer of a size designed to be used on a desk or table, as opposed to larger machines, such as mainframes, and smaller machines, such as laptops and palmtops.

(electronics) An integrated circuit, typically installed in a personal computer or other electronic devices.