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Ruggedized handheld

From: Charles J Knight <>
Date: Mon, 4 Sep 2000 22:34:28 -0500

Has anyone ever heard of the Panasonic DataPartner 
series of computers?  I just picked one up at a flea market,
and managed to get it working.  Seems like it could make
a simple little wearable, with very little mass.  It's only
slightly heavier than my palmtop, and the price was definitely
right.  Being a data-collection tool, it's also got interfaces out
the wazoo, and it is ruggedized.

Anyway, it's a model JT-780, which is a DOS machine, 
v2.11.  It's got a cute little LCD, too...20 cols x 8 lines...and 
an alphabetic keyboard.    With the exception of the DOS
prompt, and of course the size, it reminds me a bit of my
old TRS-80 Model 100.

OK, so it's not a PIII/1Ghz machine.  For $2, I couldn't go 
wrong.  :-)  Besides, it's fun to "go slumming" every now
and then.  Old computers are fun!

Here's the down side.  It's only got 256K of internal RAM.  A
RAM expansion hack would be a nice thing, as would the 
pinout for the "clip on" modem connector.  I think I found
the discrete (though SMT) RAM chips, so I at least have a
clue what goes where on the main board.

Panasonic's web site does not even acknowledge this model,
but it does acknowledge its successor, the JT-781.  It's been
precious little help.

Thanks in advance.

     -- Chuck Knight
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