The scope of this text is to provide a foundation for the application of microcomputers in the experimental environment of engineering laboratories. The book aims to enable the readers to confidently develop their own custom-built computerized data-acquisition and control systems. The book is intended primarily for students following a BEng or a Higher National Diploma course in Engineering, but should prove useful to other science students who have a major element of experimentation incorporated in their courses. Research students about to develop an automated, or partially automated, experimental test facility may find the text of particular relevance.