Stepping motors find applications wherever repeated stop-start or incremental controlled motions are encountered. Their basic design and construction makes them very suitable for digital (microprocessor) control. Consequently they are to be found in computer hardware (disk drives, printers, etc.), clocks, numerically controlled machine tools, and domestic appliances. The authors take a practical approach to the subject using many informative diagrams to explain the motor's working principles, construction details, electronic controls, applications, and methods of manufacture.