1. CS 185C/286: The History of Computing November 7 Class Meeting Department of Computer Science San Jose State University Fall 2011 Instructor: Ron Mak www.cs.sjsu.edu/~mak

2. Department of Computer Science Fall 2011: October 31 CS 185C/286: History of Computing © R. Mak 2 Bob Patrick  History of Computing Speaker Wednesday, Nov. 9, 6:00-7:00 PM Auditorium ENGR 189 Reception before the talk in ENGR 294 at 5:00 PM “Software is What the Hardware Designers Left Out: Programming the Early Computers”  Developed the first operating system  World’s first independent computer consultant

3. Department of Computer Science Fall 2011: October 31 CS 185C/286: History of Computing © R. Mak 3 IBM Card-Programmed Calculator (CPC) IBM 604 Electronic Calculator slave of the 402 plugboard programming 2000+ additions/sec 86 multiplications/sec Type 521 Card Punch Type 402 Accounting Machine read 150 cards/min print 150 lines/min Type 941 Auxiliary Storage Unit Announced May 1949 over 600 produced in the early 1950s

4. Department of Computer Science Fall 2011: October 31 CS 185C/286: History of Computing © R. Mak 4 IBM 701

5. Department of Computer Science Fall 2011: October 31 CS 185C/286: History of Computing © R. Mak 5 IBM 701, cont’d  Released April 1953  Landmark IBM product The first IBM large-scale electronic computer manufactured in quantity IBM's first commercially available scientific computer The first IBM machine in which programs were stored in an internal, addressable, electronic memory Developed and produced in record time  less than two years from “first pencil on paper” to installation Key to IBM's transition from punched-card machines to electronic computers The first of the pioneering line of IBM 700 series computers, including the 702, 704, 705 and 709

6. Department of Computer Science Fall 2011: October 31 CS 185C/286: History of Computing © R. Mak 6 IBM 7090

7. Department of Computer Science Fall 2011: October 31 CS 185C/286: History of Computing © R. Mak 7 IBM 7090, cont’d  Announced December 1958 Withdrawn July 1969  General-purpose data processing system Scientific and engineering applications  Used by NASA to design the Saturn rocket Business applications  American Airlines SABRE reservation system  Fully transistorized 6X faster than IBM 709 (vacuum tubes)  229,000 additions/sec  39,500 multiplications/sec  32,000 divisions/sec 36-bit words 3 index registers