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The Human Development Index (HDI) is a summary measure of average achievement in key dimensions of human development: a long and healthy life, being knowledgeable and have a decent standard of living. The HDI is the geometric mean of normalized indices for each of the three dimensions.
Eight key HDI design principles. High-density interconnect (HDI) continues to be the fastest growing segment of the printed circuit board (PCB) market. This paper describes various design and layout procedures that the authors have learned over the last 29 years involved in printed circuit design and fabrication.