Compatible Time-Sharing System (1961-1973) Fiftieth Anniversary Commemorative Overview The Compatible Time Sharing System (1961–1973) Fiftieth Anniversary Commemorative Overview The design of the cover, half-title page (reverse side of this page), and main title page mimics the design of the 1963 book The Compatible Time-Sharing System: A Programmer’s Guide from the MIT Press. The Compatible Time Sharing System (1961–1973) Fiftieth Anniversary Commemorative Overview Edited by David Walden and Tom Van Vleck With contributions by Fernando Corbató Marjorie Daggett Robert Daley Peter Denning David Alan Grier Richard Mills Roger Roach Allan Scherr Copyright © 2011 David Walden and Tom Van Vleck All rights reserved. Single copies may be printed for personal use. Write to us at
[email protected] for a PDF suitable for two-sided printing of multiple copies for non-profit academic or scholarly use. IEEE Computer Society 2001 L Street N.W., Suite 700 Washington, DC 20036-4928 USA First print edition June 2011 (web revision 03) The web edition at http://www.computer.org/portal/web/volunteercenter/history is being updated from the print edition to correct mistakes and add new information. The change history is on page 50. To Fernando Corbató and his MIT collaborators in creating CTSS Contents Preface . ix Acknowledgments . ix MIT nomenclature and abbreviations . x 1 Early history of CTSS . 1 2 The IBM 7094 and CTSS at MIT . 5 3 Uses . 17 4 Memories and views of CTSS . 21 Fernando Corbató . 21 Marjorie Daggett . 22 Robert Daley . 24 Richard Mills . 26 Tom Van Vleck . 31 Roger Roach .