I've
always pronounced it "deck", even after they insisted
on calling themselves "Digital".
I was surprised when I moved here (10 miles from the Old Mill, and
surrounded by HP-ex-Compaq-ex-DEC installations) that everyone called it
Digital.
I think it depends on how long the person is familiar with the
company and whether they jumped on board the 'corporate identity'
bandwagon...
There is someone who, on their web page, writes, "Compaq may have
bought Digital, but DEC was never for sale."
Megan