Statements (18)
Predicate | Object |
---|---|
gptkbp:instanceOf |
gptkb:smartphone
|
gptkbp:alsoKnownAs |
TXE4
|
gptkbp:controls |
ferrite core memory
|
gptkbp:countryOfOrigin |
gptkb:United_Kingdom
|
gptkbp:developedBy |
gptkb:Post_Office_Telecommunications
|
https://www.w3.org/2000/01/rdf-schema#label |
TXE4 telephone exchange
|
gptkbp:introducedIn |
1970s
|
gptkbp:locationOfFirstDeployment |
gptkb:Leighton_Buzzard
|
gptkbp:notableFeature |
first large-scale electronic exchange in UK
|
gptkbp:predecessor |
Strowger exchange
|
gptkbp:replacedBy |
digital telephone exchanges
|
gptkbp:successor |
gptkb:System_X
|
gptkbp:switchingType |
reed relay switching
|
gptkbp:technology |
electronic telephone exchange
|
gptkbp:usedFor |
public telephone network
|
gptkbp:usedUntil |
1990s
|
gptkbp:bfsParent |
gptkb:Thorn_EMI_Data_Systems
|
gptkbp:bfsLayer |
8
|