Windows Phone Thoughts: PDA References In Science Fiction

It's pretty darn cool that someone wrote this up. This little page references, amongst other things, SF references to handheld-like devices. The top of the list is, of course, Mr. Asimov in 1956 -- but I have to admit, I like the other references as well ("tickler", "joymaker", "wristcom", etc. ;))

Based on this, I have two questions for you all.

• What do you think SF writers should predict the future of PDAs should be -- 50 years from now?
  
• What would you call such devices?

Come on, show your SF creativity! When we unveil the PPCT tome in 2053 (and when Jason and I are in our 70's 8O), I want to see correct answers! :D