Folks,
           many thanks to the several notes on this. I was aware of
BiPolar and MosFET but my brain didn't make the jump between labels
on transistor legs and voltage pins on ICs. Shame on me.

I had assumed that maybe some kind of naming convention change had
happened over the years. Given my simple naivety I tend to think of
these things as purely +v and ground (hey thats got to be right
because my 7805 has +v and ground pins and I don't need any interface
between +v and Vdd or ground and Vss <grin>)

One reason that I asked the question is that what Vcc/Vee meant  came
up on during my electronics nightschool earlier this year and the
lecturer didn't know for sure (I guess like me he just hadn't thought
about it 'cos he was excellent otherwise).

Thanks -  I can now label my diagrams more correctly (always assuming
I know which devicesI'm using  are bipolar and which are CMOS - Yes I
know - the CMOS ones come in little black bags or are stuck onto
black foam and don't always work after I've shuffled across the nylon
carpet <grin>)

Brian.
Brian Jones
Technical Planner
Java Technology Centre
IBM Hursley