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The PB 250 (later Raytheon 250[1]) was a general-purpose computer introduced in 1960 by the Packard Bell Computer Corporation.[2][3]

Central Computer weighed 110 pounds (50 kg).[4][5][6]

Design

Design started in November 1959. Computer was intended as a component in special purpose systems.[2]

Logic design has similarities with Bendix G-15 computer, which in turn was based on Alan Turing’s Pilot ACE.[7][8][9]

Circuits were derived from TRICE[10] digital differential analyzer.[4][11]

People involved in development:

  • Max Palevsky - general manager, started the development process.[8]
  • Stanley Frankel - consultant on the design of the computer logic
  • Robert Beck - designer of the computer logic[8][9]
  • Smil Ruhman - circuit design
  • Jack Mitchell and Donald Cooper - management and coordination of the overall engineering project[12]

Features

Used Flexowriter as console.[13][14][15]

Could be operated entirely from a battery power supply.[4][16][17]

Software

  • SNAP I (Symbolic Non-optimizing Assembly Program) assembler[18]
  • ATRAN (Algebraic TRANslator), process oriented language[19]
  • CINCH Interpreter, a floating point interpretive system, designed to permit rapid programming of scientific and engineering problems.[4][20]
  • OUP III (Octal Utility Package III)[21] which "allowed the operator to perform certain transfer functions, printout locations of memory, store single words into memory, and begin the execution of programs that had been stored in memory."[1]
  • NELIAC compiler[22]
  • Fortran II[23]

Uses

By WANEF (Westinghouse Astronuclear Experiment Facility), whose task was to perform basic research and reactor analysis on the NRX series of nuclear reactors to be used in nuclear rocket engine.[24]

In Saturn 1 first stage checkout.[1]

In TRICE models TC5108/250 and TC5036/250[25] hybrid computers.

In Hycomp 250 hybrid computer, later replaced by PB440.[26]

In nuclear submarine training systems[27] and in antisubmarine warfare trainers.[28]

PB 250 was licensed to SETI (French: Société européenne de traitement de l'information, lit. 'European Information Processing Company').[29] It could be connected to SETI 2000 process control system.[14]

In mobile (by van) monitoring and data processing services.[30][31][32]

Bibliography

  • Beck, Robert Mark (30 December 1960). "PB-250 - A High Speed Serial General Purpose Computer Using Magnetostrictive Delay Line Storage". Managing Requirements Knowledge, International Workshop On(AFIPS): 283. doi:10.1109/afips.1960.58. The first production computer was delivered in October 1960. {{cite journal}}: Invalid |ref=harv (help)
  • "THE PB 250 GENERAL PURPOSE DIGITAL COMPUTER". Computers and Automation. 9 (8). 196008.pdf: 1B–3B (9–11). Aug 1960. [...] was introduced by Packard Bell Computer Corporation at the Western Joint Computer Conference in May {{cite journal}}: External link in |others= (help)CS1 maint: others (link)
  • "PB-250 documents". www.bitsavers.org.
  • "PB 250" (pdf). AUERBACH Standard EDP Reports. 7: 165–251.

References

  1. ^ a b c Funderburk, B. J. (1 Jan 1968). "Automation in Saturn 1 first stage checkout": 3, 6. {{cite journal}}: Cite journal requires |journal= (help)
  2. ^ a b Beck 1960, p. 283-284.
  3. ^ Computers and Automation & Aug 1960, p. 1B (9).
  4. ^ a b c d Weik, Martin H. (Mar 1961). "PACKARD BELL 250". ed-thelen.org. A Third Survey of Domestic Electronic Digital Computing Systems. For applications where power failures and resultant loss of memory cannot be tolerated a battery power supply is available which will operate the computer for several hours without line power. {{cite web}}: Cite has empty unknown parameter: |dead-url= (help)
  5. ^ AUERBACH Standard EDP Reports & vol. 7, pp. 250.
  6. ^ bitsavers, PBC1000r4_PB250techManVol1.pdf, p. 1-3 (13).
  7. ^ Center, Smithsonian Lemelson (23 July 2014). "Computer Oral History Collection, 1969-1973, 1977: Harry Huskey and Mrs. Huskey". Lemelson Center for the Study of Invention and Innovation. AC0196_husk730419.pdf, pp. 15, 17, 19, 24.
  8. ^ a b c Center, Smithsonian Lemelson (23 July 2014). "Computer Oral History Collection, 1969-1973, 1977: Max Palevsky". Lemelson Center for the Study of Invention and Innovation. AC0196_pale730215.pdf, pp. 4-5, 10-11. {{cite web}}: Cite has empty unknown parameter: |dead-url= (help)
  9. ^ a b "Palevsky, Max oral history | 102657969 | Computer History Museum". www.computerhistory.org. p. 11, 14, 19. {{cite web}}: Cite has empty unknown parameter: |dead-url= (help)
  10. ^ Weik, Martin H. (Jan 1964). "TRICE". ed-thelen.org. A Fourth Survey of Domestic Electronic Digital Computing Systems.
  11. ^ Beck 1960, p. 285.
  12. ^ Beck 1960, p. 287.
  13. ^ Kaisler 2017, pp. 305, 309.
  14. ^ a b Computers and Automation & Sep 1963.
  15. ^
  16. ^ "Electronic Operations". Electronics Industries (2): 199. Feb 1961. A battery-operated electronic computer, PB 250, has been shown by Packard Bell Computer Div., Packard Bell Electronics. In normal operation, it operates from a battery trickle charged from a 115-v. power line. If 115-v. input is interrupted, computer can continue operating for more than 1 hr.
  17. ^ "BATTERY OPERATED COMPUTER". Computers and Automation. 10 (2). 196102.pdf: 1B (17). Feb 1961. For the first time, we believe, an electronic computer can operate entirely from a battery power supply. {{cite journal}}: External link in |others= (help)CS1 maint: others (link)
  18. ^ AUERBACH Standard EDP Reports & vol. 7, pp. 170, 215–216, 227–228, 233–234.
  19. ^ AUERBACH Standard EDP Reports & vol. 7, pp. 170, 213, 223–225, 235–237.
  20. ^ AUERBACH Standard EDP Reports & vol. 7, pp. 170, 217, 229–231, 241–242.
  21. ^ AUERBACH Standard EDP Reports & vol. 7, pp. 239
  22. ^ Computers and Automation & Jun 1963, p. 82.
  23. ^ Fortran II for the Raytheon 250 Computer.
  24. ^ Beene, J.L.; Rankin, W.D. (1 October 1964). "Reactor experimentation and the Packard-Bell computer" (Submitted manuscript). Office of Scientific and Technical Information (OSTI). doi:10.2172/4228429. {{cite journal}}: Cite journal requires |journal= (help)
  25. ^ "Programming manual for TRICE and other material on DDA's 2nd edition | 102664334 | Computer History Museum". www.computerhistory.org.
  26. ^ "Packard Bell Computer | Selling the Computer Revolution | Computer History Museum". www.computerhistory.org. HYCOMP 250---The first desk top hybrid analog/digital computing system.
  27. ^ "across the editor's desk: COMPUTING AND DATA PROCESSING NEWSLETTER - SPERRY ORDERS TWO NUCLEAR SUB TRAINING SYSTEMS". Computers and Automation. XII (5). 196305.pdf: 44. May 1963. {{cite journal}}: External link in |others= (help)CS1 maint: others (link)
  28. ^ "Advances in Instrumentation: Proceedings of the ISA International Conference and Exhibit". 38 (1). Instrument Society of America. 1983: 244. {{cite journal}}: Cite journal requires |journal= (help)
  29. ^ NIEUWBOURG, Philippe. "SETI Calculateur PB 250" [SETI Calculator PB 250]. Le blog de l'actualité du musée de l'informatique (in French). Google translation. {{cite web}}: Cite has empty unknown parameter: |dead-url= (help); External link in |others= (help)
  30. ^ "Chemical Plant Puts Computer on Wheels". Control Engineering. Vol. 8. Technical Publishing Company. 1961. p. 29.
  31. ^ Business Automation. Vol. 8. Hitchcock Publishing Company. 1962. p. 48.
  32. ^ "ACROSS THE EDITOR'S DESK: New Firms, Divisions, and Mergers - ON-CALL DATA VANS FOR HIRE". Computers and Automation. XI (7). 196207.pdf: 28. Jul 1962. {{cite journal}}: External link in |others= (help)CS1 maint: others (link)

Comp-hardware-stub Category:Transistorized computers


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