This outstanding reference book on stepping motors has now been significantly updated for the 4th Edition. It is intended to bring the reader up to date with trends that have emerged since the third edition was published. This book provides an introductory text which will enable the reader to appreciate the essential characteristics of stepping motor systems, and to understand how these characteristics are being exploited in the continuing development of new motors, drive and controllers. Stepping motor technology is well established and used for motion control, notably for computer peripherals but wherever digital control is employed. Acarnley's text is widely known and used; this new edition adds coverage of many new applications