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OS/7

OS/7 is a discontinued operating system from Sperry Univac for its 90/60 and 90/70 computer systems. The system was first announced in November 1971 for Univac's 9700 system and was originally scheduled for delivery in March 1973. However, the delivery slipped by nearly a year, which impacted the 9700 marketing effort. It was first demonstrated by Univac on the new 90/60 system in October 1973. The official release was then planned for January 1974. OS/7 was abruptly discontinued in 1975 in favor of VS/9, Univac's name for RCA's VMOS operating system.

Last revised
Jun 10, 2026
Read time
≈ 1 min
Length
186 w
Citations
6
Source
OS/7
DeveloperSperry Univac
Working stateDiscontinued
Initial releaseJanuary 1974 (1974-01)
Supported platformsUNIVAC Series 90/60 and 90/70

OS/7 is a discontinued operating system from Sperry Univac for its 90/60 and 90/70 computer systems. The system was first announced in November 1971 for Univac's 9700 system and was originally scheduled for delivery in March 1973.12 However, the delivery slipped by nearly a year, which impacted the 9700 marketing effort. It was first demonstrated by Univac on the new 90/60 system in October 1973. The official release was then planned for January 1974.2 OS/7 was abruptly discontinued in 1975 in favor of VS/9, Univac's name for RCA's VMOS operating system.34

"OS/7 is a multi-tasking, multi-programming system that utilizes a roll-in, roll-out capability to keep the CPU optimally busy."5

References

References

  1. Piasta, Frank (November 17, 1971). "Univac 9700 Features Compatibility, Performance". Computerworld. Retrieved Aug 24, 2018.
  2. UNIVAC 90/60 and 90/70
  3. "UNIVAC 90/60,90/70, and 90/80" (PDF). Datapro. September 1976. Retrieved Aug 24, 2018.
  4. "Univac 9000, Series 70 Sites Promised Help Moving to VS/9". Computerworld. November 26, 1975. Retrieved Aug 24, 2018.
  5. Leavitt, Don (October 31, 1973). "OS/7 Memory System Gives Virtual-Like Use". Computerworld. Retrieved Aug 24, 2018.