Computers play a crucial role in our day-to-day lives. With more than 150 black-and-white photographs and illustrations, Encyclopedia of Computer Science and Technology, Revised Edition provides a detailed examination of this fascinating field for students and general readers alike. This necessary update boasts more than 50 - per cent new material - a total of more than 550 updated entries, nearly 200 new to this edition, that reflect current information. Helpful appendixes include a chronology of significant events in computing, a listing of achievements in the field, and brief descriptions and contact information for some important organizations in the computer field. Major corporations and organizations in the computer field are now covered, as well as many new biographies. Further reading sections have been revised and expanded with the latest resources.