Programmed Data Processor

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Programmed Data Processor (abbreviated PDP) was the name of a series of minicomputers made by Digital Equipment Corporation. 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 (esp. Georges Doriot) wouldn't support Digital's attempting to build a "computer". The word "minicomputer" was not invented yet. So instead, Digital used their existing line of logic modules to build a Programmable Data Processor and aimed it at a market which couldn't afford the larger computers.

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

Contents

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).
  • SM EVM series of computers in the USSR
  • DVK personal computers series are PDP clones developed in USSR in 70s.
  • Elektronika BK
  • UKNC

References

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