Theory and Application of Digital Control contains the proceedings of the IFAC Symposium held at New Delhi, India on January 5-7, 1982. This book particularly presents the texts of the five plenary talks and the 110 papers of the symposium. This book organizes the papers into 109 chapters, with nearly one-third of the papers focus on digital control, particularly, software and hardware of control using microcomputers; computer-aided design; and adaptive control and modeling for digital control. Another set of papers deal with several applications of digital control techniques in solving interesting problems of socio economic systems, electrical power systems, bio systems, and artificial satellites. The reader will benefit hugely from the topics in this book that span several important theoretical and applied areas of the fast-changing topic of digital control.