Programmed Data Processor

Programmed Data Processor (PDP) was a series of minicomputers made and marketed by the Digital Equipment Corporation from 1957 to 1990. The name "PDP" intentionally avoided the use of the term "computer" because, at the time of the first PDPs, computers had a reputation of being large, complicated, and expensive machines, and the venture capitalists behind Digital (especially Georges Doriot) would not support Digital's attempting to build a "computer"; the word "minicomputer" had not yet been coined. So instead, Digital used their existing line of logic modules to build a Programmed Data Processor and aimed it at a market that could not afford the larger computers.

The various PDP machines can generally be grouped into families based on word length.

PDP series

Members of the PDP series include:

Related computers

  • TX-0 designed by MIT's Lincoln Laboratory, important as influence for DEC products including Ben Gurley's design for the PDP-1
  • LINC (Laboratory Instrument Computer), originally designed by MIT's Lincoln Laboratory, some built by DEC. Not in the PDP family, but important as progenitor of the PDP-12. The LINC and the PDP-8 can be considered the first minicomputers, and perhaps the first personal computers as well. The PDP-8 and PDP-11 were the most popular of the PDP series of machines. Digital never made a PDP-20, although the term was sometimes used for a PDP-10 running TOPS-20 (officially known as a DECSYSTEM-20).
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    Senatoriable urges continuation of anti-drug campaign

    Sun Star 12 Apr 2025
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    J&K Assembly Adjourned Again Following Ruckus Over Waqf Act, PDP Member Marshalled Out

    Kashmir Observer 08 Apr 2025
    As Speaker Abdul Rahim Rather asked them to allow the Question Hour to begin, members of NC, Congress, PDP, and Independents trooped into the well of the House, raising slogans and demanding the withdrawal of the “black law.”.
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    Photos: J-K Assembly adjourned again following ruckus over Waqf Act

    The Siasat Daily 08 Apr 2025
    As Speaker Abdul Rahim Rather asked them to allow the Question Hour to begin, members of NC, Congress, PDP, and Independents trooped into the well of the House, raising slogans and demanding the withdrawal of the “black law.”.
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    The Manila Times 07 Apr 2025
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    The Manila Times 07 Apr 2025
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    Bong Go tops Pulso ng Pilipino survey

    The Manila Times 07 Apr 2025
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    Enugu: LP Guber Candidate Cites Mbah’s Superlative Performance, Re-joins PDP

    This Day 01 Apr 2025
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    This Day 29 Mar 2025
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    Petrus Resources Announces Fourth Quarter and Year-End 2024 Financial, Operating & Reserves Results

    Canoe 26 Mar 2025
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