This HTML5 document contains 57 embedded RDF statements represented using HTML+Microdata notation.

The embedded RDF content will be recognized by any processor of HTML5 Microdata.

Namespace Prefixes

PrefixIRI
dctermshttp://purl.org/dc/terms/
yago-reshttp://yago-knowledge.org/resource/
dbohttp://dbpedia.org/ontology/
foafhttp://xmlns.com/foaf/0.1/
n12https://books.google.com/
n17https://global.dbpedia.org/id/
n15http://www.cedmagic.com/history/
yagohttp://dbpedia.org/class/yago/
dbthttp://dbpedia.org/resource/Template:
rdfshttp://www.w3.org/2000/01/rdf-schema#
freebasehttp://rdf.freebase.com/ns/
rdfhttp://www.w3.org/1999/02/22-rdf-syntax-ns#
owlhttp://www.w3.org/2002/07/owl#
wikipedia-enhttp://en.wikipedia.org/wiki/
dbchttp://dbpedia.org/resource/Category:
dbphttp://dbpedia.org/property/
provhttp://www.w3.org/ns/prov#
xsdhhttp://www.w3.org/2001/XMLSchema#
wikidatahttp://www.wikidata.org/entity/
goldhttp://purl.org/linguistics/gold/
dbrhttp://dbpedia.org/resource/

Statements

Subject Item
dbr:AT&T_Sceptre
rdf:type
dbo:Station yago:WikicatComputerTerminals yago:YagoPermanentlyLocatedEntity yago:Station104306080 yago:Object100002684 yago:Whole100003553 yago:PhysicalEntity100001930 yago:Terminal104412901 yago:Artifact100021939 yago:Facility103315023 yago:YagoGeoEntity
rdfs:label
AT&T Sceptre
rdfs:comment
The AT&T Sceptre was a graphical terminal launched by AT&T in October 1983, used for the two largest deployments of videotex in the United States: Knight Ridder's Viewtron service in Florida, and the Los Angeles Times' Gateway service in Southern California. The Sceptre was the basic bit of home kit needed for the services, to paint NAPLPS-standard geometrically-specified pages to the screen.
dcterms:subject
dbc:Computer-related_introductions_in_1983 dbc:Computer_terminals dbc:Videotex dbc:AT&T
dbo:wikiPageID
27666742
dbo:wikiPageRevisionID
1031830540
dbo:wikiPageWikiLink
dbr:Keyboard_(computing) dbr:Modem dbc:Computer_terminals dbc:Computer-related_introductions_in_1983 dbr:Computer_terminal dbr:Knight_Ridder dbr:Commodore_64 dbr:6845 dbr:Viewtron dbr:Videotex dbr:NAPLPS dbr:InfoWorld dbc:Videotex dbr:Set-top_box dbr:Intel_8088 dbr:Apple_IIe dbc:AT&T dbr:IBM_PC dbr:Synertek dbr:AT&T dbr:Prodigy_(online_service) dbr:Los_Angeles_Times dbr:Atari_800 dbr:Honeywell
dbo:wikiPageExternalLink
n12:books%3Fid=jC4EAAAAMBAJ&pg=PA31 n15:sceptre.html
owl:sameAs
wikidata:Q17014007 freebase:m.0c3tp17 n17:f7HE yago-res:AT&T_Sceptre
dbp:wikiPageUsesTemplate
dbt:Videotex dbt:Reflist dbt:AT&T
dbo:abstract
The AT&T Sceptre was a graphical terminal launched by AT&T in October 1983, used for the two largest deployments of videotex in the United States: Knight Ridder's Viewtron service in Florida, and the Los Angeles Times' Gateway service in Southern California. The Sceptre was the basic bit of home kit needed for the services, to paint NAPLPS-standard geometrically-specified pages to the screen. The set top unit came with a separate battery-powered infrared wireless keyboard and an integrated 1200/75 baud 7-bit modem, and used a domestic television set for display. Internally it was based on an Intel 8088 processor, the same as used in the original IBM PC, with 127K ROM and 48K RAM, and display circuitry based on a 6845 CRTC. These provided a high resolution raster display, in 16 colors chosen from a palette of 256 – rather more than could be supported by the Commodore 64, Atari 800 or Apple IIe home computers of the time. However, unlike those machines the Sceptre was strictly a dedicated terminal. There was no possibility of using it for independent computing. The Sceptre was initially offered at $600, an "introductory discount" on an intended list price of $900. (It was said that each one cost AT&T $1200 to manufacture). Specifying the Sceptre gave the videotex services the advantage of a single graphics standard to design their pages to, and it positioned the services squarely as aiming for the more general domestic consumer-electronics customer, rather than a more specialist computing sector. But there were few takers at the price, and sales were not helped by the further subscription and access connection charges, the leisurely speed of the system, and the relatively uninvolving nature of the information on the service. In May 1984 Viewtron responded by offering combined rental of the Sceptre and subscription for $39.95 a month, but take-up was still slight, and in May 1985 Viewtron belatedly opened the service to microcomputers. Both Viewtron and the Times-Mirror's Gateway service folded in March 1986. It was estimated that between them the two services had cost the ventures' owners and their partners in the region of $80 million. Keyfax, a third NAPLPS-based service, based in Chicago, had offered its users an alternative Honeywell Synertek design, somewhat sleeker in appearance than ATT's Sceptre, initially for $750, later reduced to $350; or to use their own computers. Its service was also closed down, in May 1986. The NAPLPS protocol was later re-used for the basis of the graphics of the Prodigy online service, which began in 1988. But this was wholly directed at microcomputer owners running special software. It made no attempt to seek users with dedicated terminals.
gold:hypernym
dbr:Terminal
prov:wasDerivedFrom
wikipedia-en:AT&T_Sceptre?oldid=1031830540&ns=0
dbo:wikiPageLength
4969
foaf:isPrimaryTopicOf
wikipedia-en:AT&T_Sceptre