|
gptkbp:instanceOf
|
mainframe computer
|
|
gptkbp:architecture
|
stack machine
|
|
gptkbp:countryOfOrigin
|
gptkb:United_Kingdom
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
English Electric KDF9
|
|
gptkbp:input
|
gptkb:print
magnetic tape
punched cards
paper tape
|
|
gptkbp:instructionSet
|
stack-based
|
|
gptkbp:introduced
|
1964
|
|
gptkbp:length
|
48 bits
|
|
gptkbp:manufacturer
|
gptkb:English_Electric
|
|
gptkbp:notableFor
|
early use of stack architecture
|
|
gptkbp:notableInstitution
|
gptkb:University_of_Cambridge
gptkb:University_of_Oxford
gptkb:University_of_Leeds
|
|
gptkbp:operatingSystem
|
gptkb:Whetstone_KDF9_Operating_System
Egdons
|
|
gptkbp:predecessor
|
gptkb:English_Electric_DEUCE
|
|
gptkbp:processor
|
discrete transistor logic
|
|
gptkbp:RAM
|
magnetic core memory
|
|
gptkbp:speed
|
~1 MHz
|
|
gptkbp:status
|
obsolete
|
|
gptkbp:successor
|
gptkb:ICL_1900_series
|
|
gptkbp:totalProduced
|
about 29 units
|
|
gptkbp:usedBy
|
universities
research institutions
|
|
gptkbp:usedFor
|
scientific computing
academic research
mathematical computation
|
|
gptkbp:bfsParent
|
gptkb:Whetstone_KDF9_Operating_System
|
|
gptkbp:bfsLayer
|
7
|