(1) (
Silicon
On
Sapphire) An MOS chip-fabrication method that places a thin layer of silicon over a sapphire substrate (base). This technique was used for earlier LSI fabrication, but not considered useful for higher-density VLSI chips. See
SOI.
(2) (
Systems
On
Silicon) A complete system on a single chip. See
SoC.
(3) (
System
Of
Systems) An umbrella term for integrating and managing multiple independent, self-contained systems as a single entity.
(4) (
Server
Operating
System) An operating system that resides on the server.
(5) (
Sophisticated
Operating
System) The operating system in the Apple III. See
Apple III.