Hmmm, is an Imlac PDS-1 a terminal, or a system?
I tend to think of it as 'the first' intellegent terminal, as it runs
code locally, but did not (normally) have a stand-alone OS or mass
storage. They were clearly intended to be hung off of another system
like a mini or mainframe.
And what other terminals came with a real front pannel? This has got to
have the highest geek-attractor-factor of any 'terminal' ever made!