Server A powerful computer which is central to many networks. The server will control access to the network, and will store most files centrally. Internet web pages are held on the service provider's web server. Simulations Computer programmes which simulate real or imaginary scenarios. Often used to simulate events which would normally be impossible, difficult or dangerous.
Most word processors contain automatic facility to check texts for unknown words.
These are spell-checkers. Some word processors also contain the automatic facility to check the grammar of the text against pre-programmed criteria. Both facilities are generally able to offer alternative suggestions where they detect a possible mistake. Spreadsheet An application in which textual and numerical data can be entered, stored and displayed. It can perform sophisticated calculations and be used to draw graphs of the data.