[NTLK] History of the PDA

I am sure the PDA goes back much farther than the Newton... Saw an essay where the author gave examples starting from 1975.

I stumbled upon the Sony PTC-500 PalmTop. Looks like quite a full featured PDA... handwriting recognition as well, only sold in Japan circa 1991. Anyone know anything about it? Or, other interesting PDAs from before the 1990s?

Picture of the Sony PTC-500 PalmTop:

http://zeak.air-nifty.com/main/images/cimg0941.jpg

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Received on Sat Dec 13 23:18:04 2008