That which we call a rose
By any other word would smell as sweet.
If you define the difference between embedded sofware built on an OS, and embedded software containing its "own" I-O, scheduling and interrupt routines, then maybe this could be answered for a specific software by researching the programs source file.
Kees
hello everybody ,
i want to know whether each electronic device ( like DVD , normal mobiles (Not Blackberry) , audio devices in car , TV , washing machines etc.)has their respective OS or not ?
In my opanion some electronic devices has OS and some has only software for operating itself?
whether my concepts are right or wrong?
what factors decides nature of OS/software of a device?

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic