(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.

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

(computing, mathematics) a formal theory of computability

(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 process of aggregating the power of several computers to collaboratively run a single computational task in a transparent and coherent way.

A computer that features the best characteristics of the analog computer and digital computer.

(computer hardware) An early type of computer that used electromagnetic relays.

(computer hardware, dated) A computer intended for use in the home.