Birkenstock, James W. (James Warren), 1912-2011-06-082011-06-081980-08-12James W. Birkenstock, OH 4. Oral history interview by Erwin Tomash and Roger H. Stuewer, 12 August 1980. Charles Babbage Institute, University of Minnesota, Minneapolis. http://purl.umn.edu/107118OH 4https://hdl.handle.net/11299/107118Transcript, 67 pp. Audio file available at http://purl.umn.edu/94845From his perspective as advisor to the president and subsequently as Director of Product Planning and Market Analysis at IBM, Birkenstock discusses the metamorphosis of the company from leader of the tabulating machine industry to leader of the data processing industry. He describes his involvement with magnetic tape development in 1947, the involvement of IBM in the Korean War, the development of the Defense Calculator and the 70l computer, and the emergence of magnetic core memory from the SAGE project. He then recounts the entry of IBM into the commercial computer market with the 702. The end of the interview concerns IBM's relationship with other early entrants in the international computer industry, including litigation with Sperry Rand, its cross-licensing agreements, and cooperation with Japanese electronics firms.en-USComputer historySAGE (Air defense system)Patent suits -- United StatesMagnetic tapesMagnetic coresInternational Business Machines Corporation.IBM 702 (Computer)IBM 701 (Computer)Computer industry -- United States -- HistoryComputer industry -- Japan -- HistoryComputer industry -- History.Sperry Rand CorporationOral History