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  • HOPPER, Grace Murray; AIKEN, Howard.

    Verlag: Cambridge MA Harvard University Press, 1946

    Anbieter: Shapero Rare Books, London, Vereinigtes Königreich

    Verbandsmitglied: ABA ILAB PBFA

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    First edition; 4to; 9 plates from photographs of which 8 are double-sided, pencilled editorial notes to chapter 1, light tanning from a loose partial sheet of equations inserted between pages 292 and 293, contents faintly toned; original blue cloth, title to spine gilt, cloth rubbed and marked with scattered loss of size, particularly along the spine, faint ring mark to the upper board, small worn areas at the extremities, very good condition; 561pp. First edition of the first computer manual, written for the Harvard Mark I. One of the earliest general-purpose electromechanical computers, the Mark I 'brought Babbage's principles of the analytical engine almost to full realization, while adding important new features' (IBM's ASCC Introduction 2, IBM website via the Wayback Machine). Significant portions of this manual were composed by computer science pioneer Grace Murray Hopper (1906-1992), who was 'the chief author of chapters 1-3 and the eight appendices following chapter 6. Chapters 4 and 5 were written by Aiken and Robert Campbell, and chapter 6, containing directions for solving sample problems on the machine, was primarily the work of Brooks J. Lockhart' (Hook & Norman, History of Information website). Interestingly, the present copy contains pencilled editorial notes in chapter 1, typically shortening and simplifying sentences as if for a new edition or perhaps a separate publication or talk. Though at first glance the hand looks similar to Hopper's, careful comparison with a technical manuscript produced during the same period does not seem to indicate a match ('Formulas and coding for problem G on the Mark I', Grace Murray Hopper Collection, Smithsonian National Museum of American History). The corrections also do not match the final text of Aiken and Hopper's article on the Mark I in Electrical Engineering 65, also published in 1946. Additionally, there are calculations on a scrap of lined paper loosely inserted between pages 292 and 293, but these not not match her hand, either. We have been unable to locate sufficient examples of Aiken's handwriting to determine whether he was the editor. The Mark I was first proposed in 1937 by Harvard professor of applied mathematics Howard Aiken (1900-1973), whose background was in both electrical engineering and physics, and who hoped to use electronic calculating machines to solve complex scientific problems. Initially designated the Automatic Sequence Controlled Calculator, it was funded by the U.S. Navy and IBM, built by IBM at Endicott, New York, and delivered to Harvard in early 1944. The Mark I was used immediately by the Manhattan Project's John von Neumann to make calculations related to the implosion of the first atomic bomb. Grace Murray Hopper came to the project as a naval reservist after earning her PhD in mathematics at Yale and teaching at Vassar for thirteen years. She was one of the first three programmers of the Mark I and made enormous contributions to the project, for which she received the Naval Ordnance Development Award (Mitchell, The Contributions of Grace Murray Hopper, University of North Texas PhD Dissertation, 1994). 'In 1946 Aiken and Grace Hopper published A Manual of Operation for the Automatic Sequence Controlled Calculator. The instruction sequences scattered throughout this volume on the Harvard Mark I were among the earliest published examples of digital computer programs. Aiken saw himself as Babbage's intellectual successor, and in an excellent historical introduction to this technical manual he and Hopper placed the Harvard Mark I in its historical context' (Hook & Norman). '[The Harvard Mark I] manual was a milepost that marked the state of the art of machine computation at one of its critical places: where, for the first time, machines could automatically evaluate arbitrary sequences of arithmetic operations. Most of this volume (pp. 98-337, 406-557) consists of descriptions of the Mark I's components, its architecture, and operational codes for directing it to solve typical problems. The Manual is one of the first places where sequences of arithmetic operations for the solution of numeric problems by machine were explicitly spelled out. It is furthermore the first extended analysis of what is now known as computer programming since Charles Babbage's and Lady Lovelace's writings a century earlier. The instruction sequences, which one finds scattered throughout this volume, are thus among the earliest examples anywhere of digital computer programs' (Ceruzzi 1985, xv-xvii). The Mark I was obsolete almost as soon as it was delivered, and Aiken and his team would go on to design and build three additional machines. He 'directed research in switching theory, data processing, and computing components and circuits' and 'initiated one of the earliest graduate programs in computer science at Harvard University: fifteen doctoral degrees and many master's degrees were earned under his supervision. Scientists across the world were welcomed into his laboratory, and he did much to stimulate interest in computers in Europe' (IEEE Computer Society biography). Hopper remained at Harvard through 1949 to work on the Mark II and III, but had to leave when her three-year term as research fellow ended because permanent positions were not available to women. She joined the Eckert-Mauchly Computer Corporation as a senior mathematician on the development of the UNIVAC I and II. It was there that she 'pioneered the idea of automatic programming and explored new ways to use the computer to code. In 1952 Hopper developed the first compiler called A-0, which translated mathematical code into machine-readable codean important step toward creating modern programming languages' (Biography, Office of the President of Yale University). Beginning in the early 1950s she pushed for language-based programming, which at the time was believed to be infeasible. Her creation of a word-based compiler and programming language, FLOW-MATIC, ma.