Making large numeric displays
cisin at xenosoft.com
Wed Oct 4 16:57:48 CDT 2006
On Wed, 4 Oct 2006, David Griffith wrote:
> How about a mock-nixie made from electro-luminescent wire?
howzbout: making 7 segment displays from flourescent tubes?
anywhere from about 6 inches to 16 feet per digit
rig up a multibit input (parallel port?) on a PC, wire that to the
existing 7 segment displays, and write trivial code to display an image of
7 segment displays on the PC's screen (or projector!)
In ~1979, my partner in a computer business (Elcompco) negotiated a deal
with Lawrence Hall of Science (the museum, not the labs) to make a bunch
of power supplies for Kim-1's. I still stumble over them.
But, they also needed a classroom display. We took a picture of a Kim-1,
enlarged and mounted it, and wired up rows of plain LEDs replacing the
digits in the enlarged picture, and put a real Kim-1 behind the poster.
I wanted to make LARGE keypads on the poster, but my partner veto'd the
Grumpy Ol' Fred cisin at xenosoft.com
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