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INTERIM COMPUTER MUSEUM

Hardware/Software Preservation and Restoration Stories

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INTERIM COMPUTER MUSEUM
Hardware/Software Preservation and Restoration Stories
  • DEC Datasystem PDP-11/23+
    Museum Exhibits | Restoration | Software

    DEC Datasystem PDP-11/23+

    Bycaretaker December 4, 2025December 4, 2025

    This PDP-11/23+ comes from Earl Evans in Tigard, OR and has been kept in very good condition over the years. Earl had gone through a collection of dozens of RL02 10MB packs and put together a few with TSX and RT11 operating systems. Along with spare boards there is serial line cabling and bulkheads, a…

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  • MITS Altair 8800
    Microcomputers | Restoration

    MITS Altair 8800

    ByCharles Anthony October 27, 2025October 28, 2025

    Saturday October 25th, 2025: The power supply has been replaced with a modern unit. The chassis has an CPU board and a 4K static RAM board. Powering on produced some front panel lights, but no switches seemed to be functioning other then reset. Voltage checks revealed the front panel 5V regulator was putting out about…

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  • Past Events
    Events | VCF

    Past Events

    Bycaretaker October 23, 2025October 24, 2025

    This BLOG entry features summaries of past events where ICM has participated as an exhibitor. For archives of Interim Computer Festival please visit https://sdf.org/icf Portland Retro Gaming Expo – October 17th – 19th, Portland OR Hans Reutter graciously arranged for us to have 8 tables with a 9th table at the ATM machine with a…

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  • Boeing’s PDP-7a
    Boeing's PDP-7a | Museum Exhibits | Restoration

    Boeing’s PDP-7a

    Bycaretaker September 22, 2025October 28, 2025

    Boeing News – November 14, 1968 In November 1968, Boeing engineers demonstrated to Brigadier General Mahlon E. Gates, Commanding General of the Army’s Sentinel Logistics Command, a hybrid computing system built around a DEC PDP-7A and a Type 340 graphics display. The PDP-7A functioned as an interactive front-end processor, handling light-pen input and real-time display…

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  • KICKI: a DECsystem1060
    KICKI | Sponsor a Computer

    KICKI: a DECsystem1060

    Bycaretaker September 20, 2025October 24, 2025

    KICKI is a dual PDP-10 model KI10 sn 522 and 606. While KICKI is current in preservation, we hope one day to have it running again. As of June 2025 former DEC LCG FE Gary Solomon has confirmed that both 522 and 606 CPUs have a complete module complement with the UML. To support the…

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  • Current Exhibits
    Museum Exhibits

    Current Exhibits

    Bycaretaker July 27, 2025August 11, 2025

    This post documents most of the current exhibits as well as preserves what has been on display and highlights what is new. It is organized as top being the current exhibition organized in groups by area. All exhibits are considered permanent unless noted as a rotating exhibit. Remotely accessible machines are noted as OnLINE. August…

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  • MIT-MC.ARPA
    MIT-MC.ARPA | Sponsor a Computer

    MIT-MC.ARPA

    Bycaretaker June 8, 2025October 18, 2025

    MIT-MC.ARPA was a DECSYSTEM-10 KL10 Model 1080 operated by the MIT MACSYMA Consortium, serving as one of the most significant systems in the development of AI and symbolic computation during the 1970s and early 1980s. Running the Incompatible Timesharing System (ITS), MC provided a uniquely open and collaborative computing environment where many pioneering software systems…

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  • Centurion Computer Corporation
    Centurion | Sponsor a Computer

    Centurion Computer Corporation

    ByRick Altherr June 8, 2025July 18, 2025

    The Centurion Computer Corporation CPU-6 was a mid-1970s minicomputer designed primarily for industrial control, data acquisition, and real-time processing applications. Built using TTL logic and early LSI components, the CPU-6 featured a 16-bit architecture with a relatively fast instruction cycle for its time, often under 2 microseconds. It supported both fixed-point and limited floating-point arithmetic…

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  • Thinking Machines Connection Machine 2
    CM-2 | Sponsor a Computer

    Thinking Machines Connection Machine 2

    Bycaretaker June 7, 2025October 1, 2025

    Thinking Machines Connection Machine 2 (CM-2) Preservation of this artifact is made possible through a donation from the Amara Foundation. Introduced: 1987Manufacturer: Thinking Machines Corporation (Founded by Danny Hillis and Sheryl Handler)Architecture: Massively parallel SIMD (Single Instruction, Multiple Data) Principal Designers & Contributors Danny Hillis is a computer scientist, inventor, and entrepreneur best known as the visionary behind the Connection…

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  • Opening up the DEC Precision Display 340
    DEC Type 340 | Restoration

    Opening up the DEC Precision Display 340

    ByCharles Anthony June 6, 2025October 28, 2025

    This system has 0 sponsors yielding $0.00/mo in support. Simulating a P7 point-drawing CRT is hard; the behavior of the phosphor is subtle and distinctive, and the optics of seeing the image painted on an actual period correct CRT are awesome. The ICM has the DEC 340 cabinetry and the CRT, but most of the…

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