AC power: Power that comes from an electrical outlet in the wall or power strip.

adapter card: A circuitry board that, when added to a computer internally, increases that computer’s capabilities; also called an expansion card.

Administrator account: An account for the manager of a computer or network. An Administrator account offers significantly more privileges in managing the PC compared to a Standard account.

AGP: Accelerated Graphics Port; a type of computer video expansion.

all-in-one: A type of inkjet printer that can also act as a scanner, fax machine, and copier.

application: A kind of software used for productivity or to create things (the software that does the work).