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The UNIX Time-Sharing System

Operating Systems – Swarthmore College – Fall 2025

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Instructions:

  1. read the paper; closely read your section (& the one before and after);
  2. distill your assigned section into a SINGLE slide (no more!);
  3. use a mix of images/diagrams/videos/memes in addition to text;
  4. make sure it looks nice;
  5. put any citations in the speaker notes;
  6. don’t mess with other slides;
  7. be sure you can communicate your main points in 2-3 minutes (or less).

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Introduction (Keith)

HARDWARE

DEC PDP-7, PDP-9, PDP-11

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  • Who && When && Where?�Bell Labs (Telephone Company) in NJ; 1969
  • Why? telephone switching and admin; text processing; research in OS, language and networks
  • What? Editor, assembler, debugger, text formatter, compilers: SNOBOL, Fortran, BASIC, C
  • Simplicity, elegance and ease-of-use