(a)   :software that helps a user run a computer

(a)   : the software that manages all the computer hardware and software; it also acts as an interface between computer hardware components and the user, and provides a platform where applications can run

(a)   : software that helps maintain the smooth functioning of a digital device by helping the operating system manage tasks and resources

(a)   : physical parts of a computer that you can touch and see, e.g. the processor, storage devices, input devices, output devices

(a)   :software program that operates a hardware device connected to a computer

(a)   : any type of software that secures and protects a digital device

(a)   : reorganising files stored on a hard drive to ensure that all parts of the same file are located one after the other on the drive

(a)   : device that is detected automatically and set up correctly for use by the operating system; no human intervention is needed personal

(a)   : sometimes called a PIN number or PIN code; a passcode that allows a user access to a digital device

(a)   : password or code made up of numbers or numbers and letters and other characters (depending on the device), which allows a user access to a digital device

(a)   : security method that identifies people using a physical attribute (e.g. a fingerprint) or a behaviour (e.g. a hand gesture)

(a)   : system that matches a real-time image of a human face with a database of saved facial representations to allow a user access to a digital device

(a)   : system that matches a real- time image of a human fingerprint with a database of saved fingerprint representations to allow a user access to a digital device

(a)   : step-by-step instructions to solve a particular problem

(a)   : situation that occurs when pieces of files are scattered across the surface of a hard disc when the operating system is storing the file

(a)   : memory used to store programs and data currently being used by the processor