GLOSSARY OF TERMS

Undelete:: To bring back a deleted item. Also an Undelete program. Originally devised as part of utility packages such as Norton and PC Tools, it is now standard with all operating systems.
Undo:: This allows users to go back one or more steps to return to the state a document or other work was in before an operation was carried out.
Uninterruptable Power Supply:: (UPS) This is a battery standby power supply that will allow a user to save work and shut down a system should the main power fail.
Unix:: (You-Nicks) A command-line operating system developed by AT&T in the early 1970s. Linux was developed from it.
Upload:: To transfer data to a serveror portable computer device.
User Interface:: All the features of a program or system that govern the manner by which people interact with it.
Utility:: A program that improves the operability of a computer system or provides additional features.