Problems for Students of Computers ·
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Open PDF in New Window
BEST AVAILABLE COPY i The pur'pose of this DIGITAL COMPUTER Itop*"°a""-'"""neesietter' YNEWSLETTER . W OFFICf OF NIVAM RUSEARCMI • MATNEMWTICAL SCIENCES DIVISION Vol. 9, No. 2 Editors: Gordon D. Goldstein April 1957 Albrecht J. Neumann TABLE OF CONTENTS It o Page No. W- COMPUTERS. U. S. A. "1.Air Force Armament Center, ARDC, Eglin AFB, Florida 1 2. Air Force Cambridge Research Center, Bedford, Mass. 1 3. Autonetics, RECOMP, Downey, Calif. 2 4. Corps of Engineers, U. S. Army 2 5. IBM 709. New York, New York 3 6. Lincoln Laboratory TX-2, M.I.T., Lexington, Mass. 4 7. Litton Industries 20 and 40 DDA, Beverly Hills, Calif. 5 8. Naval Air Test Centcr, Naval Air Station, Patuxent River, Maryland 5 9. National Cash Register Co. NC 304, Dayton, Ohio 6 10. Naval Air Missile Test Center, RAYDAC, Point Mugu, Calif. 7 11. New York Naval Shipyard, Brooklyn, New York 7 12. Philco, TRANSAC. Philadelphia, Penna. 7 13. Western Reserve Univ., Cleveland, Ohio 8 COMPUTING CENTERS I. Univ. of California, Radiation Lab., Livermore, Calif. 9 2. Univ. of California, SWAC, Los Angeles, Calif. 10 3. Electronic Associates, Inc., Princeton Computation Center, Princeton, New Jersey 10 4. Franklin Institute Laboratories, Computing Center, Philadelphia, Penna. 11 5. George Washington Univ., Logistics Research Project, Washington, D. C. 11 6. M.I.T., WHIRLWIND I, Cambridge, Mass. 12 7. National Bureau of Standards, Applied Mathematics Div., Washington, D.C. 12 8. Naval Proving Ground, Naval Ordnance Computation Center, Dahlgren, Virgin-.a 12 9. Ramo Wooldridge Corp., Digital Computing Center, Los Angeles, Calif. -
English for It Students ɹɡɵɤɨɦⱢɩɟɰɢɚɥɶɧɨɫɬɟɣ, ⱢɜɹɡɚɧɧɵɯⱢɢɧɮɨɪɦɚɬɢɤɨɣɢɜɵɱɢɫɥɢɬɟɥɶɧɨɣɬɟɯɧɢɤɨɣ
ɊɈɋɋɂɃɋɄɂɃɇɈȼɕɃɍɇɂȼȿɊɋɂɌȿɌ Ɇɨɪɨɡɂɇ., ɤɚɧɞɢɞɚɬɩɟɞɚɝɨɝɢɱɟɫɤɢɯɧɚɭɤ, ɞɨɰɟɧɬɤɚɮɟɞɪɵɢɧɨɫɬɪɚɧɧɵɯ ɹɡɵɤɨɜ ɊɨɫɇɈɍ. Ɋɟɰɟɧɡɟɧɬ: ȺɥɟɤɫɟɟɜɚɆɇ., ɞɨɰɟɧɬ, ɤɚɧɞɢɞɚɬɮɢɥɨɥɨɝɢɱɟɫɤɢɯɧɚɭɤ, ɡɚɜɟɞɭɸɳɚɹɤɚɮɟɞɪɨɣɢɧɨɫɬɪɚɧɧɵɯɹɡɵɤɨɜ ɊɨɫɇɈɍ. ɂɇ. ɆɈɊɈɁ ɍɱɟɛɧɨɟ ɩɨɫɨɛɢɟ ɩɪɟɞɧɚɡɧɚɱɟɧɨ ɞɥɹ ɨɛɭɱɟɧɢɹ ɚɧɝɥɢɣɫɤɨɦɭ ɹɡɵɤɭ ɩɪɨɝɪɚɦɦɢɫɬɨɜ, ɨɩɟɪɚɬɨɪɨɜ ɗȼɆ ɢ ɞɪɭɝɢɯ ɫɩɟɰɢɚɥɢɫɬɨɜ, ɫɜɹɡɚɧɧɵɯ ɫ ɢɧɮɨɪɦɚɬɢɤɨɣɢɜɵɱɢɫɥɢɬɟɥɶɧɨɣɬɟɯɧɢɤɨɣ. əɡɵɤɨɜɨɣɦɚɬɟɪɢɚɥɩɨɫɨɛɢɹɨɬɨɛɪɚɧɫ ɭɱɟɬɨɦɩɨɬɪɟɛɧɨɫɬɟɣɞɚɧɧɨɣɤɚɬɟɝɨɪɢɢɨɛɭɱɚɟɦɵɯ. ɐɟɥɶɸɞɚɧɧɨɝɨɩɨɫɨɛɢɹ ɹɜɥɹɟɬɫɹɩɨɦɨɳɶɫɬɭɞɟɧɬɚɦɜɨɜɥɚɞɟɧɢɢɚɧɝɥɢɣɫɤɢɦ ENGLISH FOR IT STUDENTS ɹɡɵɤɨɦɫɩɟɰɢɚɥɶɧɨɫɬɟɣ, ɫɜɹɡɚɧɧɵɯɫɢɧɮɨɪɦɚɬɢɤɨɣɢɜɵɱɢɫɥɢɬɟɥɶɧɨɣɬɟɯɧɢɤɨɣ. ȼ ɩɨɫɨɛɢɢ ɢɫɩɨɥɶɡɨɜɚɧɵ ɚɭɬɟɧɬɢɱɧɵɟ ɦɚɬɟɪɢɚɥɵ, ɱɬɨ ɞɚɟɬ ɜɨɡɦɨɠɧɨɫɬɶ ɩɨɡɧɚɤɨɦɢɬɶɫɹ ɢɦɟɧɧɨ ɫ ɬɟɦ ɹɡɵɤɨɦ, ɧɚ ɤɨɬɨɪɨɦ ɝɨɜɨɪɹɬ ɧɨɫɢɬɟɥɢ ɹɡɵɤɚ ɢ ɤɨɬɨɪɵɣɢɫɩɨɥɶɡɭɟɬɫɹɜɫɩɟɰɢɚɥɶɧɨɣɥɢɬɟɪɚɬɭɪɟɞɚɧɧɨɣɨɛɥɚɫɬɢɧɚɭɤɢɢɬɟɯɧɢɤɢ. ɉɨɫɨɛɢɟ ɫɨɫɬɨɢɬ ɢɡ ɩɹɬɢ ɪɚɡɞɟɥɨɜ, ɩɨɫɥɟɞɨɜɚɬɟɥɶɧɨɟ ɢɡɭɱɟɧɢɟ ɤɨɬɨɪɵɯ ɩɨɡɜɨɥɹɟɬ ɩɨɥɭɱɢɬɶ ɨɛɳɟɟ ɩɪɟɞɫɬɚɜɥɟɧɢɟ ɨ ɤɨɦɩɶɸɬɟɪɟ, ɟɝɨ ɢɫɬɨɪɢɢ, ɜɨɡɦɨɠɧɨɫɬɹɯ, ɜɢɞɚɯɢɨɫɧɨɜɧɵɯɫɮɟɪɚɯɩɪɢɦɟɧɟɧɢɹ. ȼɪɟɡɭɥɶɬɚɬɟɦɧɨɝɨɤɪɚɬɧɨɝɨ ɩɨɜɬɨɪɟɧɢɹɨɫɧɨɜɧɨɣɬɟɦɚɬɢɱɟɫɤɨɣɥɟɤɫɢɤɢɞɨɫɬɢɝɚɟɬɫɹɟɟɩɪɨɱɧɨɟɭɫɜɨɟɧɢɟ. ɉɨɫɨɛɢɟɦɨɠɟɬɛɵɬɶɢɫɩɨɥɶɡɨɜɚɧɨɞɥɹɨɛɭɱɟɧɢɹɫɬɭɞɟɧɬɨɜɥɸɛɨɣɮɨɪɦɵ ɨɛɭɱɟɧɢɹ, ɜ ɬɨɦ ɱɢɫɥɟ ɢ ɞɢɫɬɚɧɰɢɨɧɧɨɣ. ɇɚɥɢɱɢɟ ɨɬɜɟɬɨɜ ɤ ɡɚɞɚɧɢɹɦ ɢ ɬɟɦɚɬɢɱɟɫɤɨɝɨɫɥɨɜɚɪɹɩɨɡɜɨɥɹɟɬɢɫɩɨɥɶɡɨɜɚɬɶɟɝɨɞɥɹɫɚɦɨɫɬɨɹɬɟɥɶɧɨɣɪɚɛɨɬɵ. ɆɈɋɄȼȺ 2010 1 2 1. First Steps in IT English: Words, Notions, Measurements 2) device ɚ) ɷɤɪɚɧ b) ɭɫɬɪɨɣɫɬɜɨ c) ɩɪɢɜɨɞ d) ɩɚɦɹɬɶ Unit A Parts and Measurements 3) to run 1 Vocabulary a) ɨɛɪɚɛɚɬɵɜɚɬɶ b) ɜɵɩɨɥɧɹɬɶ c) ɢɡɦɟɪɹɬɶ d) ɡɚɩɭɫɤɚɬɶ to compute ROM – Read Only to move -
A Survey of Large-Scale Digital Computers And
.' ; .' -' .~ " :>.:.<... :.: . ..~ ~-- ~ :" ..~.. ,,', . '.' :';" "OFFICE OF NAV'AL '--n'ES'EARGH ' DEPARTMENT OF TH E . NA V Y WASHINGTON! 0 C - ... ... .\. :,.' asurvey of lARG[ ·SCAl( DICII At COMPUTfRS AND COMPUlfR PROJfCIS Prepared by the . Computer Branch Mathematical Sciences Division Physical Sciences Group OFFICE OF NAV/~l RESEARCH DEPARTMENT OF THE NA V Y , WAS HI NG TON, D. C. r r FOREWORD [ Submitted herewith is a "Survey of Large-Scale Digital Computers and Computer Projects" prepared by Mr. A. E. Smith of the Computer Branch of the Mathematical Sciences Division, with the assistance of Dr. Mina Rees, Head, Math ematical Sciences Division, and Dr. C. V. L. Smith, Head, Computer Branch. This document is a revision of "A Survey [ of Large-Scale Computers and Computer Projects" dated August 1948, which in turn is a revision of an article in the Monthly Research Report, 1 November 1947. Grateful ac knowledgment is made to the directors of various computer projects who have either prepared material descriptive of f: their machines or who have revised material written by the Computer Branch. In particular, the section on the Aiken Mark II was prepared by the Naval Proving Ground, Dahlgren, Virginia, and those on the National Bureau of Standards com L puters by National Bureau of Standards personnel. The in formation on the Bell Computer Model VI and on the General Electric Computer was obtained from papers by Mr. E. G. Andrews and Mr. B. R. Lester, respectively. The informa tion on European computers is, with the exception of that concerning the ACE, the Swiss computer, and BARK, based . -
The Mechanical Monsters
The Mechanical Monsters Physical computational devices from the early part of the 20th century James Tam Punch Card Based Machines • Different machines would use different forms of encoding. • The programmer would use a machine to punch the information for a program onto card or tape. • Typically the program would then be given to a computer operator so the program would be run. • After a delay the results would then be given back to the programmer for analysis. Link to extra optional video: video of punch File images: cards and punch James Tam James Tam tape Video #1: The Use Of Computers During World War II • Video link not available (original video could not be found) James Tam The Mechanical Monsters Mechanical Monsters: Groups • The Zuse machines (Z1 – Z4) • Bell Relay Computers • The Harvard Machines • The IBM calculators James Tam The Zuse Machines • Machines: – Z1 – Z2 – Z3 – Z4 • Originally Zuse’s machine was called the V1 (Versuchsmodell- 1/Experimental model-1) • After the war it was changed to ‘Z’ (to avoid confusion with the weapons being developed by Wernher von Braun). James Tam Konrad Zuse (1910-1995) • Born in Berlin he had childhood dreams of designing rockets that would reach the moon or planning out great cities. • He trained as a civil engineer. – As a student he became very aware of the labor needed in the calculations in his field. = (x * y) / (z +(a1 + b)) Colourbox.com James Tam Image: http://www.konrad-zuse.net The Mechanical Monsters Konrad Zuse (1910-1995): 2 • Zuse was the first person “…to construct an automatically controlled calculating machine.” – “A history of modern computing” (Williams) – Not electronic – Didn’t have a stored program in memory (instructions came from external tape). -
Computer Science at Birkbeck College
School of Computer Science & Information Systems A Short History Greetings from our founders, Andrew and Kathleen Booth Kathleen and I send our greetings and best wishes to the students and Faculty of the Department of Computer Science at Birkbeck on the 50th anniversary of the foundation of the department in 1957. We wish that we could be with you but constraints of age and health make this impossible. You may like to know that the original department was responsible for building one of the first operational computers in the World, the APEXC and its successors, the M series and the commercial version the HEC machines sold by the then ICT of which over 120 were produced. Having produced the machines we needed teaching material and so produced the first systematic books on modern numerical analysis, programming and computer design. On the research side we started research on Machine Translation, on thin film storage technology for digital storage, and magnetic drum and disc storage. Braille transcription, now touted as a recent IBM invention was actually the work of one of our Ph.D. students. And genetic, self modifying programs were also invented here. These are only a few of our original activities and you are the carriers of a distinguished origin. Kathleen and I (and the late Dr. J.C. Jennings the other member of the original faculty) send you our best wishes for the future. I do not expect to be with you in body in 2058 but I shall be with you in spirit. Andrew & Kathleen Booth Vancouver Island, BC, Canada April 2008 1. -
Highlights from Digital Computer Museum Report 1/1982
file:////cray/Shared/COLLECTIONS/Curator/mondo_museum_report.htm Return to List of Reports Highlights from Digital Computer Museum Report 1/1982 Contents of Highlights ● Back of Front Cover ● The Director's Letter ● Unusual Photos ● LECTURE SERIES Back of Front Cover The Digital Computer Museum is an independent, non-profit, charitable foundation. It is the world's only institution dedicated to the industry-wide preservation of information processing devices and documentation. It interprets computer history through exhibits, publications, videotapes, lectures, educational programs, excursions, and special events. Hours and Services The Digital Computer Museum is open to the public Sunday through Friday, 1:00 pm to 6:00 pm. There is no charge for admission. The Digital Computer Museum Lecture Series Lectures focus on benchmarks in computing history and are held six times a year. All lectures are videotaped and archived for scholarly use. Gallery talks by computer historians, staff members and docents are offered every Wednesday at 4:00 and Sunday at 3:00. Guided group tours are available by appointment only. Books, posters, postcards, and other items related to the history of computing are available for sale at the Museum Store. The Museum's lecture hall and reception facilities are available for rent on a prearranged basis. For information call 617-467-4443. BOARD OF DIRECTORS Charles Bachman C. Gordon Bell Gwen Bell Harvey C. Cragon Robert Everett C. Lester Hogan Theodore G. Johnson Andrew C. Knowles, III John Lacey Pat McGovern George Michael Robert N. Noyce Kenneth H. Olsen Brian Randell Edward A. Schwartz Michael Spock Erwin O. Tomash Senator Paul E. -
Cameron Kenneth E 1964 Sec.Pdf (5.032Mb)
pESIGN OF THE M.3 COMPUTER A Thesis �ubmitted to the Faculty of Graduate Studies in Partial Fulfilment of the Requirements for the Degree of Master of Science in the Department of Electrical Engineering Yniversity of Saskatchewan _Kenneth E. Cameron. Saskatchewan _ Saskatoon, -The University of Saskatchewan claims copyright in conjunction with the author. Use shall not be made of the material contained herein without proper acknowledgment. Acknowledgment Tr� author wishes to express his sincere gratitude to Dr. A.D. " Booth for his invaluable guidance throughout this project. Grateful acknowledgment is also made to J.M.S. Devries for his helpful suggest- ions and keen interest in the project, to T.R. Viswanathan for ,assist ance in circuit design, to H.C. Ratz for advice in the early stages of the project and to A. Michalenko for assistance in editing this thesis. The author also extends thanks to W.R. Woodward and B.E. Michael for their capable workmanship in assembling the computer. Acknowledgment is made of financial support to the National Research Council (Grant #B.T. 140) and the Defence 'Research Board (Grant #2804-05). Abstract A solid state digital computer, the M.3, has been designed, constructed and partially tested. The computer logic is based on the M.2 computer con structed by A. D. Booth in 1956, b�t with fundamental changes to the logic associated with the store and the arithmetic section. The M.3 is a serial, fixed'point computer which uses 32 bit words and two address instructions. The 150 KC/S clock frequency permits addition or subtraction in 250 microseconds. -
International History of Computing © Edward Vanhoutte - 1 International History of Computing a Selective Overview (1614-1961)
International History of Computing © Edward Vanhoutte - 1 International History of Computing A selective overview (1614-1961) Edward Vanhoutte [email protected] Year Event Country 1614 John Napier (1550-1617) published Mirifici logarithmorum canonis GB descriptio in which he discussed his logarithms. 1622 William Oughtred (1574-1660) invented the slide rule which offered a GB quicker way to calculate logarithms 1623 Wilhelm Schickard (1592-1632) devised a calculating machine that DE enabled Johannes Kepler (1571-1630) to calculate the orbit of the planet Mars by which he proved that the sun and not the earth was the centre of the system. 1642 Blaise Pascal (1623-1662) constructed the Pascaline, an adding and FR subtracting machine that could automatically carry over amounts from a lower monetary unit to a higher monetary unit by applying distributed counting. The machine consisted of seven and later eight wheels, the first of which would count from 1 to 9, the second would count from 10 to 99, the third would count from 100 to 999, etc. 1671 Gottfried Wilhelm von Leibniz (1646-1716) built a machine that could DE multiply (and divide) by repeated additions. This calculator was based on his invention of the stepped wheel, a cylinder with nine individual stepped teeth of increasing length. 1680- Broesel invented a weaver’s programming device consisting of little AT 1690 wooden bars and a closed loop of a linen strip. 1703 Gottfried Wilhelm von Leibniz (1646-1716) described the modern binary DE number system using 0 and 1 in his essay Explication de l’arithmétique binaire, qui se sert des seuls caractères 0 et 1, avec des remarques sur son utilité, et sur ce qu’elle donne le sens des anciennes figures Chinoises de Fohy. -
Alan Turing's Automatic Computing Engine
Alan Turing’s Automatic Computing Engine This page intentionally left blank Alan Turing’s Automatic Computing Engine The Master Codebreaker’s Struggle to Build the Modern Computer Edited by B. Jack Copeland 1 3 Great Clarendon Street, Oxford ox2 6dp Oxford University Press is a department of the University of Oxford. It furthers the University’s objective of excellence in research, scholarship, and education by publishing worldwide in Oxford NewYork Auckland CapeTown Dar es Salaam Hong Kong Karachi Kuala Lumpur Madrid Melbourne Mexico City Nairobi New Delhi Shanghai Taipei Toronto With offices in Argentina Austria Brazil Chile Czech Republic France Greece Guatemala Hungary Italy Japan Poland Portugal Singapore South Korea Switzerland Thailand Turkey Ukraine Vietnam Oxford is a registered trade mark of Oxford University Press in the UK and in certain other countries Published in the United States by Oxford University Press Inc., New York © Oxford University Press 2005 The moral rights of the author have been asserted Database right Oxford University Press (maker) First published 2005 All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, without the prior permission in writing of Oxford University Press, or as expressly permitted by law, or under terms agreed with the appropriate reprographics rights organization. Enquiries concerning reproduction outside the scope of the above should be sent to the Rights Department, Oxford University Press, at the address above You must not circulate this book in any other binding or cover and you must impose this same condition on any acquirer British Library Cataloguing in Publication Data Data available Library of Congress Cataloging in Publication Data Data available Typeset by Newgen Imaging Systems (P) Ltd., Chennai, India Printed in Great Britain on acid-free paper by Biddles Ltd., King’s Lynn, Norfolk ISBN 0 19 856593 3 (Hbk) 10987654321 This is only a foretaste of what is to come, and only the shadow of what is going to be. -
Subject Index
SUBJECT INDEX Aberdeen Proving Ground Computers 43, 96 Computing Machines, Digital 1, 5, 20, 29- Accounting 167-168 34, 40^8, 86-92, 95-108, 167-177, 185, ACE 96, 174, 175 224, 228, 233-237, 240-245, 254 Actuarial Tables 187, 212, 216-217, 228 Computing Methods see Numerical Analysis Addition and Subtraction Logs 202 Congruences 12, 28, 81, 85, 191, 210 Aerodynamics see Fluid Mechanics Conversion Equipment 240-241 Air Navigation see Navigation Conversion Tables 212 Antilogarithms 195-196 Cosecant 197-198 Arc Cosine 199-200 Cosine 5, 20-21, 191, 196-198, 209 Arc Cotangent 199 Cosine, Hyperbolic 201 Arc Sine 199-200 Cosine Integral 156, 202, 222 Arc Tangent 9-11, 199-200 Cotangent 196-198 Arc Tangent Relations 9-10 Coulomb Potential 224-225 Area of Circles 199 CPC 86-92, 185, 254 ASCC 169, 224, 228 CRC 101 241 Astronomy 187, 190-191, 211, 230-231 Cube Root 194 Astrophysics 23 Cubes 189, 191-192 Automatic Computing Engine 96, 174-175 Cubic Fields 134 Automatic Sequence Controlled Calculator 169, 224, 228 Decimal Equivalents of Fractions 135-139 Derivatives 16, 213-215 Ballistics 190 Difference Equations 33-39, 163-167 BARK 29-34, 40, 155 Differences 62-66 Bell Telephone Computers 30, 45, 171 Differences of Zero 70, 73 Bernoulli Polynomials 15, 195 Differential Analyzers 104-106, 250-253 Bessel Functions 24-25, 38, 76, 80-81, 112, Differential Equation Solvers 102, 104-106, 151-152, 158-159, 163, 189, 204-207, 179 222-224, 226-227 Differential Equations 33-39, 92-95, 128- Bessel Functions, Roots of 24-25, 80 133, 155, 158, 169, 207-208, 224-225 -
A Very Brief History of Computing, 1948-2015 Transcript
A Very Brief History of Computing, 1948-2015 Transcript Date: Tuesday, 12 January 2016 - 6:00PM Location: Museum of London 12 January 2016 A Very Brief History of Computing, 1948-2015 Professor Martyn Thomas In my first lecture, Should We Trust Computers?, I described the critically important role of software based systems today. I quoted some research results that showed that software is typically put into service with more than ten defects in every thousand lines of program source code (KLoC), and explained that some of the systems we all depend on in various ways contain many million lines, implying many thousands of defects. I explained that testing a software system can only ever find a tiny fraction of these errors, and gave an example to show why that is inevitably true. Testing generally finds the most obvious errors and therefore the more testing that you do, the more obscure will be the errors that remain. That is the fundamental explanation of how it can be true that most of the software that we depend on does actually work well enough almost all of the time, and yet none of it seems to be secure against even teenage hackers – as TalkTalk appears to have found out recently[i]. In this second lecture, I want to show how we got into a situation where the hardware that we use is mostly superbly engineered and ultrareliable, whereas the software is often neither. I shall do that by sketching the history of computing at lightning speed, drawing out some things that seem to me to be important to remember when we come to consider the future – because although computing has changed most of society beyond recognition in its first seven decades, there are far more changes to come, and the more we understand the past, the better we shall be able to manage the future.