Theory and Techniques for Design of Electronic Digital Computers (popularly called the "Moore School Lectures") was a course in the construction of electronic digital computers held at the University of Pennsylvania's Moore School of Electrical Engineering between July 8, 1946, and August 30, 1946, and was the first time any computer topics had ever been taught to an assemblage of people. The course disseminated the ideas developed for the EDVAC (then being built at the Moore School as the successor computer to the ENIAC) and initiated an explosion of computer construction activity in the United States and internationally, especially in the United Kingdom.
The Moore School in Philadelphia, Pennsylvania was at the center of developments in high-speed electronic computing in 1946. On February 14 of that year it had publicly unveiled the ENIAC, the first general-purpose electronic digital computer, developed in secret beginning in 1943 for the Army's Ballistics Research Laboratory. Prior even to the ENIAC's completion, work had begun on a second-generation electronic digital computer, the EDVAC, which incorporated the stored program model. Work at the Moore School attracted researchers including John von Neumann, who served as a consultant to the EDVAC project, and Stan Frankel and Nicholas Metropolis of the Manhattan Project, who arrived to run one of the first major programs written for the ENIAC, a mathematical simulation for the hydrogen bomb project.
World War II had spawned major national efforts in many forms of scientific research—continued in peacetime—that required computationally intensive analysis; the thirst for information about the new Moore School computing machines had not been slaked, but instead intensified, by the distribution of von Neumann's notes on the EDVAC's logical design. Rather than allow themselves to be inundated with requests for demonstrations or slow progress in computer research by withholding the benefits of the Moore School's expertise until papers could be published formally, the administration, including Dean Harold Pender, Prof. Carl Chambers, and Director of Research Irven Travis, respectively proposed, organized, and secured funding for what they envisioned as a lecture series for between 30 and 40 participants enrolled by select invitation.
The 8-week course was conducted under the auspices of the United States Army Ordnance Department and the U.S. Navy's Office of Naval Research, who promised (by verbal authorizations) the $3,000 requested to cover lecturer salaries and fees and $4,000 for travel, printing, and overhead. ($1,569 over this figure was ultimately claimed.)
Even as the Moore School found itself in the computing spotlight, its computer design team was disintegrating into splinter groups who hoped to advance computing research commercially, or academically at more prestigious institutions. In the former group were ENIAC co-inventors J. Presper Eckert and John Mauchly, who the previous March had departed the Moore School amidst a patent rights dispute to found the first computer company, the Electronic Control Company (later renamed to Eckert–Mauchly Computer Corporation), and took many on the Moore School staff with them; in the latter group were Herman Goldstine (the Army's liaison to the Moore School who served as administrative overseer of the ENIAC's construction) and Arthur Burks (a Moore School professor on the ENIAC design team), lured to the Institute for Advanced Study by von Neumann. Despite the somewhat acrimonious fracturing of the ENIAC/EDVAC group, these figures gave the majority of the Moore School Lectures, with Eckert and Mauchly receiving the highest salaries ($1,200 each), while Goldstine and the others received only travel expenses and an honorarium ($50 per lecture).
Lectures were given 5 days a week on weekdays and were from 1 to 3 hours long with afternoons typically reserved for informal seminars.
Many of the pioneers of early computer development, especially those involved with ENIAC contributed to the Moore School Lectures, most prolifically Pres Eckert, followed by John Mauchly and Herman Goldstine. The topics covered virtually all facets of electronic computing relevant to the construction and operation of digital computers, and included, by popular demand, an unscheduled presentation of the ENIAC during the latter half of the sixth week and the first half of the seventh week, with lectures by Mauchly, Sharpless, and Chu. Discussions of the ENIAC were resisted since its logical design had been obsoleted even before its completion by ongoing work on the EDVAC with its stored-program concept; nevertheless, it was the only electronic digital computer then in operation and the students petitioned to see demonstrations and learn of its design.
The initial plan for the lectures, outlined by Chambers in a June 28, 1946, memorandum, was for them to be grouped into four major headings, with the second and third being presented concurrently after the completion of the first: General Introduction to Computing, covering the history, types, and uses of computing devices; Machine Elements, focusing on hardware and, indeed, software, under the term "code and control"; Detailed Study of Mathematics of Problems, what today might constitute a course in programming, including the Goldstine/Burks lectures on numerical mathematical methods and Mauchly's lectures on sorting, decimal-binary conversion and error accumulation; and finally a series of lectures on overall machine design called Final Detailed Presentation of Three Machines, though it actually came to include six machines, including the ENIAC, which despite its fame had not been an intended focus of any of the lectures.
The actual record of the lectures is incomplete. While many of the lectures were recorded on a wire recorder by Herman Lukoff and Dick Merwin, the recorder frequently broke down mid-lecture, and the recordings took several months to be transcribed and proofed by the lecturers. It wasn't until two years after the lectures, in 1948, that all of the material was assembled and published in four volumes edited by the Moore School's George W. Patterson, who was on the EDVAC staff. Some of the gaps have since been filled in with the notes of student Frank M. Verzuh. [1]
28 students were invited to attend the Moore School Lectures, each a veteran engineer or mathematician:
Uninvited attendees saw at least some of the lectures:
Additionally, many of the lecturers attended a number of the lectures by others.
The individuals and institutions represented at the Moore School Lectures went on to be involved with numerous successful computer construction projects in the late 1940s and early 1950s, including EDSAC, BINAC, UNIVAC, CALDIC, SEAC and SWAC, the IAS machine, and the Whirlwind.
The success of the Moore School Lectures prompted Harvard University to host the first computer conference in January, 1947; that same year the Association for Computing Machinery was founded as a professional society to organize future conferences.
The Atanasoff–Berry computer (ABC) was the first automatic electronic digital computer. Limited by the technology of the day, and execution, the device has remained somewhat obscure. The ABC's priority is debated among historians of computer technology, because it was neither programmable, nor Turing-complete. Conventionally, the ABC would be considered the first electronic ALU – which is integrated into every modern processor's design.
The history of computing hardware covers the developments from early simple devices to aid calculation to modern day computers.
ENIAC was the first programmable, electronic, general-purpose digital computer, completed in 1945. There were other computers that had combinations of these features, but the ENIAC had all of them in one package. It was Turing-complete and able to solve "a large class of numerical problems" through reprogramming.
John Adam Presper Eckert Jr. was an American electrical engineer and computer pioneer. With John Mauchly, he designed the first general-purpose electronic digital computer (ENIAC), presented the first course in computing topics, founded the Eckert–Mauchly Computer Corporation, and designed the first commercial computer in the U.S., the UNIVAC, which incorporated Eckert's invention of the mercury delay-line memory.
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John William Mauchly was an American physicist who, along with J. Presper Eckert, designed ENIAC, the first general-purpose electronic digital computer, as well as EDVAC, BINAC and UNIVAC I, the first commercial computer made in the United States.
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The von Neumann architecture—also known as the von Neumann model or Princeton architecture—is a computer architecture based on a 1945 description by John von Neumann, and by others, in the First Draft of a Report on the EDVAC. The document describes a design architecture for an electronic digital computer with these components:
Herman Heine Goldstine was a mathematician and computer scientist, who worked as the director of the IAS machine at Princeton University's Institute for Advanced Study and helped to develop ENIAC, the first of the modern electronic digital computers. He subsequently worked for many years at IBM as an IBM Fellow, the company's most prestigious technical position.
The First Draft of a Report on the EDVAC is an incomplete 101-page document written by John von Neumann and distributed on June 30, 1945 by Herman Goldstine, security officer on the classified ENIAC project. It contains the first published description of the logical design of a computer using the stored-program concept, which has come to be known as the von Neumann architecture; the name has become controversial due to von Neumann's failure to name other contributors.
Douglas Rayner Hartree was an English mathematician and physicist most famous for the development of numerical analysis and its application to the Hartree–Fock equations of atomic physics and the construction of a differential analyser using Meccano.
The Moore School of Electrical Engineering at the University of Pennsylvania came into existence as a result of an endowment from Alfred Fitler Moore on June 4, 1923. It was granted to Penn's School of Electrical Engineering, located in the Towne Building. The first dean of the Moore School was Harold Pender.
The Eckert–Mauchly Computer Corporation (EMCC) was founded by J. Presper Eckert and John Mauchly. It was incorporated on December 22, 1947. After building the ENIAC at the University of Pennsylvania, Eckert and Mauchly formed EMCC to build new computer designs for commercial and military applications. The company was initially called the Electronic Control Company, changing its name to Eckert–Mauchly Computer Corporation when it was incorporated. In 1950, the company was sold to Remington Rand, which later merged with Sperry Corporation to become Sperry Rand, and survives today as Unisys.
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Kathleen Rita Antonelli, known as Kay McNulty, was an Irish-born American computer programmer and one of the six original programmers of the ENIAC, one of the first general-purpose electronic digital computers. The other five ENIAC programmers were Betty Holberton, Ruth Teitelbaum, Frances Spence, Marlyn Meltzer, and Jean Bartik.
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Arthur Walter Burks was an American mathematician who worked in the 1940s as a senior engineer on the project that contributed to the design of the ENIAC, the first general-purpose electronic digital computer. Decades later, Burks and his wife Alice Burks outlined their case for the subject matter of the ENIAC having been derived from John Vincent Atanasoff. Burks was also for several decades a faculty member at the University of Michigan in Ann Arbor.
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