There was a short story, which appeared in one of the HP calculator-centric publications of the 70's or 80's, I think written by a certain George R.R. Martin or Gordon Dickson, which attempted to extrapolate the HP 41CX into a portable voice activated assistant that could schedule appointments for you. I remember thinking that was pretty far fetched for a calculator. I don't think it would have made much more sense if the author had referred to the device as a "phone"...