PDP-20 - ορισμός. Τι είναι το PDP-20
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Τι (ποιος) είναι PDP-20 - ορισμός

TYPE OF MAINFRAME COMPUTER
DECsystem-20; DECSystem-20; PDP-20; DEC-20; DECSYSTEM 20; DECSYSTEM 2020; DECSYSTEM 2040
  • 2 DECSYSTEM-2020 KS-10s (1979) at the Living Computer Museum
  • DECSYSTEM-2020 front panel

PDP-20         
The most famous computer that never was. PDP-10 computers running the TOPS-10 operating system were labelled "DECsystem-10" as a way of differentiating them from the PDP-11. Later on, those systems running TOPS-20 were labelled "DECSYSTEM-20" (the block capitals being the result of a lawsuit brought against DEC by Singer, which once made a computer called "system-10"), but contrary to popular lore there was never a "PDP-20"; the only difference between a 10 and a 20 was the operating system and the colour of the paint. Most (but not all) machines sold to run TOPS-10 were painted "Basil Blue", whereas most TOPS-20 machines were painted "Chinese Red" (often mistakenly called orange). [Jargon File] (1994-12-21)
Programmed Data Processor         
  • PDP-8/e
  • PDP-6
  • PDP-12
  • PDP-15 (partial)
  • digitizing tablet]]
  • PDP-11/40
  • PDP-7
SERIES OF MINICOMPUTERS MADE AND MARKETED BY THE DIGITAL EQUIPMENT CORPORATION FROM 1957 TO 1990
Programmable Data Processor; PDP-3; PDP 3; PDP-2; PDP 2; PDP 4; PDP 9; PDP 12; PDP 14; PDP 15; PDP 16; DEC PDP; PDP-H; DEC PDP-H
Programmed Data Processor (PDP), referred to by some customers, media and authors as "Programmable Data Processor,"
Programmed Data Processor         
  • PDP-8/e
  • PDP-6
  • PDP-12
  • PDP-15 (partial)
  • digitizing tablet]]
  • PDP-11/40
  • PDP-7
SERIES OF MINICOMPUTERS MADE AND MARKETED BY THE DIGITAL EQUIPMENT CORPORATION FROM 1957 TO 1990
Programmable Data Processor; PDP-3; PDP 3; PDP-2; PDP 2; PDP 4; PDP 9; PDP 12; PDP 14; PDP 15; PDP 16; DEC PDP; PDP-H; DEC PDP-H
<computer> (PDP) Early (1960's?) {Digital Equipment Corporation} family of minicomputers. The best known ranges were the PDP-10 and PDP-11. PAL was the {assembly language}. (1997-11-21)

Βικιπαίδεια

DECSYSTEM-20

The DECSYSTEM-20 was a 36-bit Digital Equipment Corporation PDP-10 mainframe computer running the TOPS-20 operating system (products introduced in 1977).

PDP-10 computers running the TOPS-10 operating system were labeled DECsystem-10 as a way of differentiating them from the PDP-11. Later on, those systems running TOPS-20 (on the KL10 PDP-10 processors) were labeled DECSYSTEM-20 (the block capitals being the result of a lawsuit brought against DEC by Singer, which once made a computer called "The System Ten"). The DECSYSTEM-20 was sometimes called PDP-20, although this designation was never used by DEC.