The development of new products has always been fraught with the problems associated ith achieving a design suitable for volume production capable of yielding consistent performaceresults without the need for constant technical or engineering supervision or adjustment. The achievement of this goal has become progressively more difficult as both products and technology have become increasingly complex and systems have become larger and more sophisticated. Methods and disciplines for achieving satisfactory designs are discussed and compared with past practices. Recommendations are given for the organization and control of the development processand their application to the engineering of major new products.