http://debianws.lexgopc.com/wiki143/index.php?action=history&feed=atom&title=Time_Sharing_Operating_SystemTime Sharing Operating System - Revision history2026-10-25T18:25:18ZRevision history for this page on the wikiMediaWiki 1.43.1http://debianws.lexgopc.com/wiki143/index.php?title=Time_Sharing_Operating_System&diff=5439198&oldid=prev84.128.81.26 at 15:03, 2 December 20242024-12-02T15:03:33Z<p></p>
<p><b>New page</b></p><div>{{About|the operating system by RCA|the concept of time-sharing in computing|Time-sharing}}<br />
{{refimprove|date=July 2008}}<br />
{{Infobox OS<br />
| name = Time Sharing Operating System (TSOS)<br />
| logo = <!-- [[WP:NFCC]] violation: File:RCA Records logo.svg --><br />
| logo_size = 250px<br />
| screenshot =<br />
| caption =<br />
| developer = [[RCA|Radio Corporation of America (RCA)]]<br />
| source_model = Unknown<br />
| kernel_type =<br />
| supported_platforms = [[RCA Spectra 70]] series [[mainframe computer]]s<br />
| ui = [[Command-line interface]]<br />
| family = Not Applicable<br />
| released = {{Start date and age|1968}}<br />
| latest_release_version = <br />
| latest_release_date = <br />
| latest_test_version =<br />
| latest_test_date =<br />
| marketing_target =<br />
| programmed_in = <br />
| prog_language =<br />
| language =<br />
| updatemodel =<br />
| package_manager =<br />
| working_state = Discontinued<br />
| license = [[Proprietary software|Proprietary]]<br />
| website = <br />
}}<br />
'''Time Sharing Operating System''', or '''TSOS''', is a discontinued [[operating system]] for [[RCA]] [[mainframe computer]]s of the [[RCA Spectra 70|Spectra 70]] series. TSOS was originally designed in 1968 for the Spectra 70/46, a modified version of the 70/45.<ref name=TSOS>{{cite book|last=Radio Corporation of America|title=Spectra 70 Time Sharing Operating System Information Manual|date=1968|url=http://bitsavers.trailing-edge.com/pdf/rca/spectra70/tsos/79-00-513_TSOS_InfoMan_Mar68.pdf}}</ref> TSOS quickly evolved into the '''Virtual Memory Operating System''' ('''VMOS''') by 1970. VMOS continued to be supported on the later RCA 3 and RCA 7 computer systems.<ref name=spectra>{{cite book|last=RCA Computer Systems Division|title=RCA Series Information Manual|date=Dec 1970|pages=4–17|url=http://bitsavers.trailing-edge.com/pdf/rca/spectra70/BF-000-1-00_SPECTRA_InfoMan_Dec70.pdf}}</ref><br />
<br />
RCA was in the computer business until 1971 when it sold its computer division to [[Sperry Corporation]]. Sperry renamed TSOS to [[VS/9]] and continued to market it into the early 1980s. In the mid seventies, an enhanced version of TSOS called [[BS2000]] was offered by the German company [[Siemens]].<br />
<br />
While Sperry &ndash; now [[Unisys]] &ndash; discontinued [[VS/9]], the [[BS2000]] variant, now called BS2000/OSD, is still offered by [[Fujitsu]] and used by their mainframe customers primarily in Germany and other European countries.<br />
<br />
As the name suggests, TSOS provided [[time sharing]] features. Similar to [[Compatible Time-Sharing System|CTSS]] it provided a common user interface for both time sharing and [[Batch processing|batch]], which was a big advantage over [[IBM]]'s [[OS/360]] or its successors [[MVS]], [[OS/390]] and [[z/OS]].<br />
<br />
==See also==<br />
*[[Timeline of operating systems]]<br />
<br />
==References==<br />
{{Reflist}}<br />
<br />
==External links==<br />
*[http://bitsavers.trailing-edge.com/pdf/rca/spectra70/tsos/ TSOS manuals at Bitsavers]<br />
<br />
{{Time-sharing operating systems}}<br />
<br />
[[Category:Time-sharing operating systems]]<br />
[[Category:Proprietary operating systems]]<br />
[[Category:Discontinued operating systems]]<br />
[[Category:UNIVAC software]]<br />
[[Category:1968 software]]</div>84.128.81.26