and store in modern terms), an order (s) that selects one of two numbers based on the sign of the previous operation, input and output and transferring CC to a memory location elsewhere (a jump). He determines the number of bits needed for the different order types, suggests immediate orders where the following word is the operand and discusses the desirability of leaving spare bits in the order format to allow for more addressable memory in the future, as well as other unspecified purposes. The possibility of storing more than one order in a minor cycle is discussed, with little enthusiasm for that approach. A table of orders is provided, but no discussion of input and output instructions was included in the First Draft. Controversy The treatment of the preliminary report as a publication (in the legal sense) was the source of bitter acrimony between factions of the EDVAC design team for two reasons. First, publication amounted to a public disclosure that prevented the EDVAC from being patented; second, some on the EDVAC design team contended that the stored-program concept had evolved out of meetings at the University of Pennsylvania's Moore School of Electrical Engineering predating von Neumann's activity as a consultant there, and that much of the work represented in the First Draft was no more than a translation of the discussed concepts into the language of formal logic in which von Neumann was fluent. Hence, failure of von Neumann and Goldstine to list others as authors on the First Draft led credit to be attributed to von Neumann alone. (See Matthew effect and Stigler's law.) See also Electronic delay storage automatic calculator (EDSAC), an early British computer inspired by First Draft of a Report on the EDVAC Harvard Mark I, an early electromechanical computer with instructions and numerical data kept separate (Harvard architecture) References Bibliography External links Oral history interview with J. Presper Eckert, Charles Babbage Institute, University of Minnesota. Eckert, a co-inventor of the ENIAC, discusses its development at the University of Pennsylvania's Moore School of Electrical Engineering; describes difficulties in securing patent rights for the ENIAC and the problems posed by the circulation of John von Neumann's 1945 First Draft of the Report on EDVAC, which placed the ENIAC inventions in the public domain. Interview by Nancy Stern, 28 October 1977. 1945 in computing 1945 documents 1945 in technology Computer-related introductions in 1945 Computer science books