Tabla de Contenidos: “…Minority carriers and the first two transistors / Michael Riordan and Lillian Hoddeson -- From germanium to silicon : a history of change in the technology of the semiconductor / Philip Seidenberg -- Complementarity, cooperation, and collective innovation : materials research in the semiconductor industry / Daniel Holbrook -- Jack Avins : the essence of engineering / Andrew Goldstein -- The social construction of the microprocessor : a Japanese and American story / William Aspray -- A review of U.K. government involvement in the field of semiconductor technology within the research establishments / P.R. …”