This latest edition of the Newnes Data Communications Pocket Book has been substantially updated to keep abreast with the rapid pace of developments in data communications technology. New topics have been introduced - data compression, the Internet and World-Wide Web, HyperText Mark-up Language - existing material has been updated and expanded. Despite the complexity of subject, this wealth of information is presented succinctly and in such a way, using tables, diagrams and brief explanatory text, as to allow the user to locate information quickly and easily. Thus the book should be invaluable to those involved with the installation, commissioning and maintenance of data communications equipment, as well as the end user. Mike Tooley is the well known author of many books including the Newnes Computer Engineer's Pocket Book, now in its fourth edition.