Charles A. Harper is president of Technology Seminars, Inc., an organization devoted to presenting seminars on electronic packaging and related subjects to the electronics industry. He is a graduate of The John Hopkins University School of Engineering , Baltimore, MD., and a past member of the engineering faculty of The Johns Hopkins University. He is active in numerous professional societies, including the International Microelectronics and Packaging Society (of which he is a past president), the National Electronic Packaging Conference (NEPCON), and the Institute of Electrical and Electronics Engineers. He is series editor of McGraw-Hill's Electronic Packaging and Interconnection Technology Series and a member of the Editorial Advisory Board of Electronic Packaging and Production magazine.