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The Manchester University "Baby" Computer and Its Derivatives, 1948 – 1951”
Expert Report on Proposed Milestone “The Manchester University "Baby" Computer and its Derivatives, 1948 – 1951” Thomas Haigh. University of Wisconsin—Milwaukee & Siegen University March 10, 2021 Version of citation being responded to: The Manchester University "Baby" Computer and its Derivatives, 1948 - 1951 At this site on 21 June 1948 the “Baby” became the first computer to execute a program stored in addressable read-write electronic memory. “Baby” validated the widely used Williams- Kilburn Tube random-access memories and led to the 1949 Manchester Mark I which pioneered index registers. In February 1951, Ferranti Ltd's commercial Mark I became the first electronic computer marketed as a standard product ever delivered to a customer. 1: Evaluation of Citation The final wording is the result of several rounds of back and forth exchange of proposed drafts with the proposers, mediated by Brian Berg. During this process the citation text became, from my viewpoint at least, far more precise and historically reliable. The current version identifies several distinct contributions made by three related machines: the 1948 “Baby” (known officially as the Small Scale Experimental Machine or SSEM), a minimal prototype computer which ran test programs to prove the viability of the Manchester Mark 1, a full‐scale computer completed in 1949 that was fully designed and approved only after the success of the “Baby” and in turn served as a prototype of the Ferranti Mark 1, a commercial refinement of the Manchester Mark 1 of which I believe 9 copies were sold. The 1951 date refers to the delivery of the first of these, to Manchester University as a replacement for its home‐built Mark 1. -
1. Types of Computers Contents
1. Types of Computers Contents 1 Classes of computers 1 1.1 Classes by size ............................................. 1 1.1.1 Microcomputers (personal computers) ............................ 1 1.1.2 Minicomputers (midrange computers) ............................ 1 1.1.3 Mainframe computers ..................................... 1 1.1.4 Supercomputers ........................................ 1 1.2 Classes by function .......................................... 2 1.2.1 Servers ............................................ 2 1.2.2 Workstations ......................................... 2 1.2.3 Information appliances .................................... 2 1.2.4 Embedded computers ..................................... 2 1.3 See also ................................................ 2 1.4 References .............................................. 2 1.5 External links ............................................. 2 2 List of computer size categories 3 2.1 Supercomputers ............................................ 3 2.2 Mainframe computers ........................................ 3 2.3 Minicomputers ............................................ 3 2.4 Microcomputers ........................................... 3 2.5 Mobile computers ........................................... 3 2.6 Others ................................................. 4 2.7 Distinctive marks ........................................... 4 2.8 Categories ............................................... 4 2.9 See also ................................................ 4 2.10 References -
De-Mythologising the Early History of Modern British Computing. David Anderson
Contested Histories: De-Mythologising the Early History of Modern British Computing. David Anderson To cite this version: David Anderson. Contested Histories: De-Mythologising the Early History of Modern British Com- puting.. IFIP WG 9.7 International Conference on History of Computing (HC) / Held as Part of World Computer Congress (WCC), Sep 2010, Brisbane, Australia. pp.58-67, 10.1007/978-3-642-15199-6_7. hal-01059593 HAL Id: hal-01059593 https://hal.inria.fr/hal-01059593 Submitted on 1 Sep 2014 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Distributed under a Creative Commons Attribution| 4.0 International License Contested Histories: De-Mythologising the Early History of Modern British Computing. David Anderson University of Portsmouth, “The Newmanry”, 36-40 Middle Street, Portsmouth, Hants, United Kindom, PO5 4BT Abstract A challenge is presented to the usual account of the development of the Manchester Baby which focuses on the contribution made to the project by the topologist M.H.A. (Max) Newman and other members of the Dept. of Mathematics. Based on an extensive re-examination of the primary source material, it is suggested that a very much more significant role was played by mathematicians than is allowed for in the dominant discourse. -
ALAN TURING: and the TUTORIAL MANCHESTER MARK I Program the Post-War Machine Used for Early Computer Music, JULIET KEMP Chess and Proto-Artificial Intelligence
CODING MANCHESTER MARK I ALAN TURING: AND THE TUTORIAL MANCHESTER MARK I Program the post-war machine used for early computer music, JULIET KEMP chess and proto-artificial intelligence. lan Turing’s work at GCHQ with Colossus WHY DO THIS? during WWII is well-known, as of course is the • Take a trip back to the Turing Test, but those were far from his only 1940s A involvements with early computing developments. In • Search for large prime numbers (very slowly) the late 1940s he was working on designing a • Use the logic that first stored-program computer (Colossus couldn’t store inspired the Turing Test programs, and in any case was still very secret), and in 1948 moved to Manchester where the Manchester Baby and Manchester Mark I were being developed. The Manchester Baby (aka the Manchester Small Scale Experimental Machine) wasn’t a full general- purpose computer, but a small-scale test of Williams tube memory (cathode ray memory, using the charge well created by drawing a dot or dash on the tube). However, it is considered to be the world’s first stored-program computer, running its first program on 21 June 1948, when it found the highest proper divisor of 2^18 (262,144), and took 52 minutes to run. Only two more programs were written for it: an amended One of Turing’s projects while working on the Mark I was version of this, and a program written by Turing to to write code to investigate the Riemann hypothesis, carry out long division. which has to do with the distribution of prime numbers. -