|
gptkbp:instance_of
|
gptkb:architecture
gptkb:computer
|
|
gptkbp:addressed
|
multiple addressing modes
|
|
gptkbp:architectural_style
|
16-bit
|
|
gptkbp:architecture
|
18-bit
|
|
gptkbp:bus_connections
|
gptkb:Unibus
|
|
gptkbp:data_bus_width
|
18-bit
18 bits
|
|
gptkbp:designed_by
|
gptkb:Digital_Equipment_Corporation
|
|
gptkbp:development
|
gptkb:FORTRAN
gptkb:BASIC
gptkb:LISP
gptkb:ALGOL
|
|
gptkbp:discontinued
|
gptkb:1983
|
|
gptkbp:first_introduced
|
gptkb:1967
|
|
gptkbp:has_legacy
|
influenced modern computing
influenced computer networking
influenced operating systems
influenced programming languages
|
|
gptkbp:has_networking_capability
|
gptkb:DECnet
gptkb:RSX-11
gptkb:TOPS-20
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
PDP-20
|
|
gptkbp:influenced_by
|
gptkb:PDP-6
|
|
gptkbp:input_output
|
gptkb:video_game
disk drives
printers
tape drives
unibus
terminals
|
|
gptkbp:instruction_set
|
variable-length instructions
|
|
gptkbp:is_popular_in
|
1970s
|
|
gptkbp:manufacturer
|
gptkb:Digital_Equipment_Corporation
|
|
gptkbp:notable_feature
|
gptkb:protocol
|
|
gptkbp:notable_programs
|
gptkb:Incompatible_Timesharing_System_(ITS)
gptkb:manuscripts
gptkb:Unix
gptkb:PL/_I
gptkb:Forth
gptkb:Ruby
gptkb:Smalltalk
gptkb:COBOL
gptkb:Multics
gptkb:Ada
gptkb:Java
gptkb:Pascal
gptkb:PHP
gptkb:C++
gptkb:Fortran
gptkb:Haskell
gptkb:ML
gptkb:Python
gptkb:Visual_Basic
gptkb:Interlisp
gptkb:TOPS-20
gptkb:C_shell
gptkb:C#
gptkb:Emacs
gptkb:Racket
gptkb:Scheme
gptkb:Simula
gptkb:Tcl
gptkb:ALGOL
gptkb:Bourne_shell
gptkb:Prolog
gptkb:Java_Script
gptkb:Perl
gptkb:LISP_Machine
C language
Dynamic Modeling Group software
|
|
gptkbp:notable_users
|
gptkb:Harvard_University
gptkb:Stanford_University
gptkb:University_of_California,_Berkeley
gptkb:Bell_Labs
gptkb:MIT
gptkb:NASA
|
|
gptkbp:operating_system
|
gptkb:TOPS-10
gptkb:TOPS-20
|
|
gptkbp:peripherals
|
disk drives
printers
tape drives
terminals
|
|
gptkbp:predecessor
|
gptkb:PDP-6
|
|
gptkbp:programming_language
|
gptkb:LISP
|
|
gptkbp:ram
|
up to 64 KB
up to 128 KB
|
|
gptkbp:registration
|
general-purpose registers
|
|
gptkbp:release_year
|
gptkb:1967
|
|
gptkbp:released_in
|
gptkb:1967
|
|
gptkbp:replaced_by
|
gptkb:PDP-10
|
|
gptkbp:successor
|
gptkb:PDP-10
gptkb:PDP-11
gptkb:PDP-15
|
|
gptkbp:supports
|
gptkb:assembly_language
real-time processing
multiprogramming
|
|
gptkbp:type
|
gptkb:microprocessor
|
|
gptkbp:used_in
|
time-sharing systems
|
|
gptkbp:user_base
|
businesses
government agencies
academic institutions
research laboratories
|
|
gptkbp:uses
|
gptkb:Transistor
|
|
gptkbp:bfsParent
|
gptkb:Digital_Equipment_Corporation
|
|
gptkbp:bfsLayer
|
4
|