small planet

[Martin Czech]

The world is a small planet. The LDR book is still on my desk, a
colleague walks in, he sees the book and tells me that he worked for
Valvo in another life and that he edited this very book!

Now to my question.

We often see supply pins labeled with Vcc,Vee,Vss,Vdd.  I believe that
the indices mean collector, emitter, source and drain.  I believe that
the writers/artists have npn or nmos transistors in mind when labeling
drawings with this, So Vdd and Vcc means positive supply, Vee and Vss
negative. This can be different for PMOST-techologies (BBD). But nobody
told me so, and I have never seen a text saying so.

Is this so?  Who invented this notation?

People start to mix it up, I've seen Vee and Vdd together , which makes
not much sense for a CMOS chip then.

Since this is a small world, perhaps anybody knows some of the responsible
old timers ?

m.c.