On Sun, 4 Jun 2023, Rick Bensene via cctalk wrote:
an example of early "mobile computing".
(Tongue firmly in cheek).
The original Osborne 1 had a 12V power input!
Lee Felsenstein was asked how large and heavy the battery pack would be.
He replied that it was not intended to be run portably on batteries, and
that that was solely for getting it from one power source to another, and
therefore the battery pack might be your car.
At the time, Lee drove a Honda Accord (1920 pounds)
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Grumpy Ol' Fred cisin(a)xenosoft.com