ZUSE, KONRAD, 2 ITEMS

i. "Die mathematischen Voraussetzungen für die Entwicklung logistisch-kombinativer Rechenmachinen" [in:] Zeitschrift für Angewandte Mathematik und Mechanik Ingenieurwissenschaftliche Forschungarbeiten Band 29, Nr. 1/2, Jan/Feb 1949, pp.36-37, Berlin: Akademie Verlag, 1949, linen-backed boards, (bought from Interlibrum, Vaduz, 1993), [T&W Z15; Randell 1979 p.179]ii. "Programmgesteuerte Rechenmachinen in Deutschland" [in:] Zeitschrift für Angewandte Mathematik und Mechanik Ingenieurwissenschaftliche Forschungarbeiten Band 30, Nr. 8/9, Aug/Sept. 1950, pp.292-293, Berlin: Akademie Verlag, 1950, linen-backed boards, (bought from Interlibrum, 1993), [T&W Z16; Randell 1979 p.179]4to

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The major computer innovator Konrad Zuse holds a number of "firsts" in computer history. He was the first person to make a successful build of a fully functional programmable computing machine (the Z3 in 1941, which followed on from the earlier Z2 and Z1, originally constructed in 1934 in his parent's living room in Berlin). He was the first to use a calculating machine with a fixed program in a production line (constructed during World War II for the HS 293 flying bomb), and after the war he pioneered the first algorithmic programming language (Plankalül). In the first paper here Zuse describes the mathematical prerequisites for the development of combinatorial logic machines; the second describes the development of calculating machines from Babbage onward, and briefly gives an account of his Z4, being set up in Zurich at the time of writing.