ICT Glossary for 14-16 year olds (James Abela)

A copy of data that is made in case the original data is lost or damaged. The backup can be used to restore the original data.

The amount of data that can fit through an Internet connection. You can compare it to a ten-lane motorway which can fit more cars on it than a four-lane motorway. Bandwidth is measured in bits per second (bps). This indicates the number of bits of information that can fit down the line in one second. Kb or Kbps means thousands of bits per second; Mb or Mbps means millions of bits per second.

Prejudice towards one viewpoint or against another.

An automated method of recognising a person based on physical characteristics. Among the features measured are face, fingerprints, hand geometry, iris and voice.

Short for 'web log', a shared online journal where people can post diary entries about their personal experiences and hobbies.

A disk that enables the recording, rewriting and playback of high-definition video and the storing of large amounts of data. It has more than five times the storage capacity of traditional DVDs and can hold up to 25 GB on a single-layer disk and 50 GB on a dual-layer disk.

Allows the exchange of data over short distances from fixed and mobile devices. In order for devices to communicate they must be able to understand the Bluetooth rules (protocols).

A high-speed connection to the Internet.

A software application for retrieving, presenting and navigating information resources on the World Wide Web.