Embedded system?

[pepito]

What is the meaning of Embedded System? Must every OS have one?

Thank you,

pepito

[common]

An embedded system is a system capable of operating on flash devices, typically.  This generally includes non-volatile, solid state storage.  Embedded Systems typically do not communicate directly with the user, but they may.  Essentially, the operating system is on non-magnetic, non-volatile, static storage memory, as opposed to a HDD.

[pepito]

Thanl you!

[Anton]

I feal that it is neccessary to point out(as an addition to above mentioned), that in this system there is no dynamic memory, no way to kill a process, or to create one, ...