10 May
1999
10 May
'99
9:36 a.m.
At 10:49 AM 5/10/99 -0700, you wrote:
--- ss(a)allegro.com wrote:
Sounds like you got one touch screen parts for the later TouchScreen II
computer. It was an option on that computer and some terminals. It was
built into the HP 150. I THINK that all you have is a bezel with two rows
of LED IR emitters and two rows of photo receptors. All you had to do to
install it on the TS II was to pop out the old bezel, plug in the cable and
snap this bezel in place.
Joe
Re:
Hey. I've got one of those, just the IR hardware, not the CPU or monitor.
I picked it up at the Dayton Hamfest a couple of years ago because it looked
neat.
Is there enough information out there to attempt to interface one of these
units to another kind of computer? There is a ribbon cable with fifteen
to twenty wires coming off of one side. I've been playing with a HP 150 recently. Do
any of you physicists out
there know how the touch screen works?
Infrared beams...at least for the HP 150 A and B.
The first two models had visible holes where dust could get in and obscure
the IR LEDs. Later, HP added an IR-transparent bezel over them to avoid
that problem.
-ethan
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