On 26 Oct 2011 at 11:05, David Riley wrote:
  Just musing, anyway.  I feel like going down this
taxonomy rabbit hole
 is as much of a fool's errand as the "speed metal"/"thrash
metal"/etc.
 arguments we'd have in high school. 
Exactly.  We're a long way from the time that "embedded" meant 68HC11
or 8051-style applications.   I know that there's at least one vendor
that sticks a Linux system inside what amounts to a 100BaseT female
connector.  Is it embedded?  I'd say so.
The absence or presence of file systems is neither here nor there.  I
wouldn't dispute that a $20 MP3 player, for example, is an embedded
application, but there's a file system in there for certain.
Operating system?  Well, there are OSes that fit inside a low-end
PIC.  For that matter, there's a version of Linux that runs on a
PIC32 ?C.
Rabbit-hole indeed.  The boundaries are very indistinct.
Particularly when someone is talking about internet-connected home
refrigerators.
Technology has a tendency to obsolete terms of art.  On my local
Craigslist, there's a seller who advertises a "minicomputer" for
sale.  It's basically an mobile device with an external keyboard.
--Chuck