Introduction

It is difficult to define what "Information technology" is accurately. It is even more technology especially since so many new one are being coined this encyclopaedic dictionary of information Technology defines a large number of computer terms, both formal and informal while at the same time giving lengthier descriptions of a number of terms of particular importance it has a number of emphases; second t define all terms used in as concise and meaningful a way as possible third in some cases where it is not possible; third in some cases where it is not possible to give a very full description the references are given where more information can be obtained Fourth the book has been designed in such a way that each term can be easily accessible and understandable in order to make each definition self contained, it is sometimes necessary to duplicate definitions but this has been reduced as far as possible. Finally, the terms are confined to those which are of current use and outdated terms have been omitted whenever necessary line diagrams have been inculded to illustrate the terms fully this book is intended to be a useful references book which it is hoped, will be of great use to engineers computer personnel and DPMs and to anyone with an interest in information technology.